🦠
Infectious Disease
Prevention, Protection, Preparedness
⏱
15 minutes
📚
Occupational Health Path
✓
CDC/OSHA Guidelines
Katie, Your Safety Guide
Welcome! Infectious diseases are illnesses caused by germs—bacteria, viruses, fungi, or parasites—that can spread from person to person. Whether it's the common cold, flu, or more serious illnesses, understanding how diseases spread and how to protect yourself is essential for everyone. The lessons learned from COVID-19 showed us how important prevention is. In this module, you'll learn practical steps to protect yourself, your coworkers, and your family from infectious diseases.
Slide 2 of 15
Why Infectious Disease Prevention Matters
Infectious diseases are illnesses caused by pathogenic microorganisms—bacteria, viruses, parasites, or fungi—that can be transmitted directly or indirectly from one person to another.
🚨 Infectious Disease Impact
According to CDC and WHO:
- Millions of workdays lost annually due to infectious diseases
- Respiratory illnesses (flu, COVID-19, colds) are leading cause of employee absences
- Workplace outbreaks can affect entire teams and operations
- Vulnerable populations at higher risk for complications
- Prevention is cost-effective: $1 spent on flu vaccines saves $3 in medical costs and lost productivity
- Simple measures (handwashing, staying home when sick) reduce transmission by 50%+
💡 Why Workplace Prevention Matters
Workplaces are high-risk environments for disease transmission because:
- Close contact between employees in shared spaces
- Shared surfaces (doorknobs, keyboards, break room equipment)
- Enclosed spaces with recirculated air
- Workers coming to work sick (presenteeism)
- Diverse workforce with varying immunity levels
Learning Objectives:
- Understand what infectious diseases are and how they spread
- Recognize common respiratory illnesses (COVID-19, flu, colds)
- Practice proper hand hygiene and respiratory etiquette
- Know when to stay home and isolation protocols
- Implement personal protective measures
- Understand workplace pandemic preparedness
Slide 3 of 15
How Infectious Diseases Spread
Understanding transmission routes
Knowing how diseases spread helps you protect yourself. Most workplace infectious diseases spread through these routes:
💧
Respiratory Droplets
How: When infected person coughs, sneezes, talks, or breathes, they release droplets containing germs. Droplets can land in mouths/noses of nearby people or be inhaled.
Distance: Usually within 6 feet.
Diseases: COVID-19, influenza, common cold, strep throat, whooping cough.
Prevention: Physical distancing, masks, covering coughs/sneezes, ventilation.
Distance: Usually within 6 feet.
Diseases: COVID-19, influenza, common cold, strep throat, whooping cough.
Prevention: Physical distancing, masks, covering coughs/sneezes, ventilation.
🌬
Airborne Transmission
How: Very small particles (aerosols) stay suspended in air for hours and can travel long distances. Can be inhaled even when infected person is no longer present.
Distance: Can spread beyond 6 feet.
Diseases: COVID-19 (especially), tuberculosis, measles, chickenpox.
Prevention: Proper ventilation, air filtration, masks (N95/KN95 for high risk), outdoor settings.
Distance: Can spread beyond 6 feet.
Diseases: COVID-19 (especially), tuberculosis, measles, chickenpox.
Prevention: Proper ventilation, air filtration, masks (N95/KN95 for high risk), outdoor settings.
👆
Contact Transmission
Direct contact: Touching infected person (handshake, hug) then touching your face.
Indirect contact: Touching contaminated surfaces (doorknobs, phones, keyboards, elevator buttons) then touching face.
Diseases: Many respiratory illnesses, norovirus, staph infections, pink eye.
Prevention: Hand hygiene, surface disinfection, avoid touching face, don't share personal items.
Indirect contact: Touching contaminated surfaces (doorknobs, phones, keyboards, elevator buttons) then touching face.
Diseases: Many respiratory illnesses, norovirus, staph infections, pink eye.
Prevention: Hand hygiene, surface disinfection, avoid touching face, don't share personal items.
🍽
Fecal-Oral Route
How: Germs from infected person's stool contaminate hands, food, or water. Others ingest the germs.
Common in: Food service, childcare, healthcare settings with poor hand hygiene.
Diseases: Norovirus, hepatitis A, E. coli, salmonella, cholera.
Prevention: Thorough handwashing after bathroom use, proper food handling, safe water sources.
Common in: Food service, childcare, healthcare settings with poor hand hygiene.
Diseases: Norovirus, hepatitis A, E. coli, salmonella, cholera.
Prevention: Thorough handwashing after bathroom use, proper food handling, safe water sources.
⚠ The "Touching Your Face" Problem
People touch their face an average of 23 times per hour! Eyes, nose, and mouth are entry points for germs. Even if you wash your hands regularly, touching your face transfers germs from surfaces to mucous membranes. Breaking this habit significantly reduces infection risk.
Slide 4 of 15
Common Respiratory Illnesses
COVID-19, Influenza, and Common Cold
Respiratory illnesses are the most common infectious diseases in workplaces. Understanding symptoms and differences helps with appropriate response.
COVID-19 (SARS-CoV-2)
Common Symptoms:
• Fever or chills
• Cough (often dry)
• Shortness of breath
• Fatigue
• Body aches
• Loss of taste or smell (distinctive)
• Sore throat, congestion
• Nausea, vomiting, diarrhea
Onset: 2-14 days after exposure (average 5 days)
Contagious Period: 2 days before symptoms through at least 5 days after symptom onset
Key Actions: Test if symptomatic or exposed. Isolate if positive. Follow CDC guidance for isolation duration. Vaccines and boosters reduce severity.
• Fever or chills
• Cough (often dry)
• Shortness of breath
• Fatigue
• Body aches
• Loss of taste or smell (distinctive)
• Sore throat, congestion
• Nausea, vomiting, diarrhea
Onset: 2-14 days after exposure (average 5 days)
Contagious Period: 2 days before symptoms through at least 5 days after symptom onset
Key Actions: Test if symptomatic or exposed. Isolate if positive. Follow CDC guidance for isolation duration. Vaccines and boosters reduce severity.
Influenza (Flu)
Common Symptoms:
• Sudden high fever (100-104°F)
• Dry cough
• Severe body aches and fatigue
• Headache
• Sore throat
• Runny or stuffy nose (less common)
• Sometimes vomiting/diarrhea (especially children)
Onset: Sudden, 1-4 days after exposure
Contagious Period: 1 day before symptoms through 5-7 days after
Key Actions: Stay home. Annual flu vaccine recommended. Antiviral medications (Tamiflu) most effective within 48 hours of symptom onset.
• Sudden high fever (100-104°F)
• Dry cough
• Severe body aches and fatigue
• Headache
• Sore throat
• Runny or stuffy nose (less common)
• Sometimes vomiting/diarrhea (especially children)
Onset: Sudden, 1-4 days after exposure
Contagious Period: 1 day before symptoms through 5-7 days after
Key Actions: Stay home. Annual flu vaccine recommended. Antiviral medications (Tamiflu) most effective within 48 hours of symptom onset.
Common Cold (Rhinovirus)
Common Symptoms:
• Runny or stuffy nose (primary symptom)
• Sore throat
• Sneezing
• Mild cough
• Mild fatigue
• Rarely fever (more common in children)
• Symptoms milder than flu
Onset: Gradual, 1-3 days after exposure
Contagious Period: 1-2 days before symptoms through duration of illness (usually 7-10 days)
Key Actions: Stay home if symptoms interfere with work. No cure—treat symptoms. Rest and fluids.
• Runny or stuffy nose (primary symptom)
• Sore throat
• Sneezing
• Mild cough
• Mild fatigue
• Rarely fever (more common in children)
• Symptoms milder than flu
Onset: Gradual, 1-3 days after exposure
Contagious Period: 1-2 days before symptoms through duration of illness (usually 7-10 days)
Key Actions: Stay home if symptoms interfere with work. No cure—treat symptoms. Rest and fluids.
💡 Can't Tell the Difference? That's Normal!
Symptoms of COVID-19, flu, and colds overlap significantly. You cannot reliably distinguish them based on symptoms alone. Key points:
• Test for COVID-19 if you have respiratory symptoms
• Stay home regardless of which illness you have
• Follow your workplace's sick leave policy
• Consult healthcare provider if symptoms are severe or worsening
• Test for COVID-19 if you have respiratory symptoms
• Stay home regardless of which illness you have
• Follow your workplace's sick leave policy
• Consult healthcare provider if symptoms are severe or worsening
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Hand Hygiene: Your Best Defense
Proper handwashing technique
Hand hygiene is the single most effective way to prevent infectious disease transmission. Proper technique matters!
1
Wet Hands with Clean Running Water
Turn on tap and wet hands completely with clean water (warm or cold). Water alone doesn't kill germs—soap is essential.
2
Apply Soap
Apply enough soap to cover all hand surfaces. Any soap works—antibacterial soap is not necessary for most situations.
3
Lather and Scrub for 20 Seconds
Scrub all surfaces: palms, backs of hands, between fingers, under nails, wrists. 20 seconds minimum—sing "Happy Birthday" twice or count slowly to 20. Most people wash for only 6 seconds!
4
Rinse Thoroughly
Rinse hands completely under clean running water. Ensure all soap is removed—residual soap can cause skin irritation.
5
Dry Hands Completely
Use clean towel or air dryer. Wet hands spread germs more easily than dry hands. In public restrooms, use paper towel to turn off faucet and open door.
✓ When to Wash Hands
ALWAYS wash hands:
• Before, during, and after preparing food
• Before eating
• After using the restroom
• After blowing your nose, coughing, or sneezing
• Before and after caring for someone who is sick
• After touching garbage or contaminated surfaces
• After touching shared surfaces (doorknobs, elevator buttons, shared equipment)
• When hands are visibly dirty
• Before and after your work shift
• Before, during, and after preparing food
• Before eating
• After using the restroom
• After blowing your nose, coughing, or sneezing
• Before and after caring for someone who is sick
• After touching garbage or contaminated surfaces
• After touching shared surfaces (doorknobs, elevator buttons, shared equipment)
• When hands are visibly dirty
• Before and after your work shift
🧴 Hand Sanitizer as Alternative
When soap and water aren't available, use alcohol-based hand sanitizer (60%+ alcohol):
• Apply enough to cover all hand surfaces (size of a quarter)
• Rub hands together, covering all surfaces, until dry (20 seconds)
• Don't wipe or rinse off before dry
Limitations: Less effective on visibly dirty or greasy hands. Doesn't eliminate all types of germs. Soap and water is always preferred when available.
• Apply enough to cover all hand surfaces (size of a quarter)
• Rub hands together, covering all surfaces, until dry (20 seconds)
• Don't wipe or rinse off before dry
Limitations: Less effective on visibly dirty or greasy hands. Doesn't eliminate all types of germs. Soap and water is always preferred when available.
Slide 6 of 15
Respiratory Etiquette
Covering coughs and sneezes
How you cough and sneeze affects everyone around you. One uncovered sneeze can spread germs up to 26 feet!
❌ DON'T Do These Things
Never cough or sneeze:
• Into your hands (then you contaminate everything you touch)
• Openly into the air (spreads droplets to everyone nearby)
• Toward another person
• Into shared spaces without covering
A single uncovered cough releases 3,000 droplets. A sneeze releases 40,000 droplets at 100 mph!
• Into your hands (then you contaminate everything you touch)
• Openly into the air (spreads droplets to everyone nearby)
• Toward another person
• Into shared spaces without covering
A single uncovered cough releases 3,000 droplets. A sneeze releases 40,000 droplets at 100 mph!
✓ DO Practice Proper Technique
When you need to cough or sneeze:
Best Option: Cover with tissue
• Use tissue to cover nose and mouth
• Throw tissue in trash immediately
• Wash hands or use hand sanitizer right after
If no tissue available: Use your elbow
• Cough or sneeze into inner elbow/upper sleeve
• NOT your hands (you use hands to touch things)
• Turn away from others
• Wash hands as soon as possible
If wearing a mask:
• Keep mask on when coughing/sneezing
• Mask catches most droplets
• Wash hands after
• Replace mask if it becomes damp
Best Option: Cover with tissue
• Use tissue to cover nose and mouth
• Throw tissue in trash immediately
• Wash hands or use hand sanitizer right after
If no tissue available: Use your elbow
• Cough or sneeze into inner elbow/upper sleeve
• NOT your hands (you use hands to touch things)
• Turn away from others
• Wash hands as soon as possible
If wearing a mask:
• Keep mask on when coughing/sneezing
• Mask catches most droplets
• Wash hands after
• Replace mask if it becomes damp
⚠ Additional Respiratory Etiquette
- Dispose of tissues properly: Use lined trash can. Don't leave used tissues on desks or surfaces.
- Avoid touching your face: Eyes, nose, and mouth are entry points for germs. Keep hands away.
- Don't share items that touch your mouth/nose: Drinks, utensils, phones, masks, towels.
- Clean your workspace: Disinfect phone, keyboard, desk regularly—especially if you're sick.
- Create distance: If coughing/sneezing frequently, maintain 6+ feet from others when possible.
Remember: Respiratory etiquette protects others from YOUR germs and yourself from THEIR germs. Everyone benefits!
Slide 7 of 15
When to Stay Home from Work
Protecting yourself and coworkers
Coming to work sick spreads illness to coworkers and customers. Staying home when contagious protects everyone and helps you recover faster.
🏠 STAY HOME if you have:
Fever:
• Temperature 100.4°F (38°C) or higher
• Stay home until fever-free for 24 hours WITHOUT fever-reducing medication
• Fever indicates your body is fighting infection—you're likely contagious
Vomiting or Diarrhea:
• Stay home until 24-48 hours after last episode
• Highly contagious (norovirus, food poisoning)
• Cannot perform work duties effectively
COVID-19 Positive Test:
• Stay home minimum 5 days from symptom onset or positive test
• Can return after Day 5 if fever-free 24 hours and symptoms improving
• Wear mask around others through Day 10
• Follow updated CDC/workplace guidance
Severe Symptoms:
• Difficulty breathing or shortness of breath
• Chest pain or persistent pressure
• Severe or persistent vomiting
• Confusion or inability to stay awake
• Seek immediate medical attention!
Productive Cough with Colored Mucus:
• Yellow, green, or bloody mucus indicates infection
• Likely bacterial infection—see doctor
• Contagious to others
Known Exposure to Contagious Disease:
• Direct exposure to COVID-19, flu, strep throat, etc.
• Monitor for symptoms
• Test if recommended
• May need to quarantine depending on exposure and vaccination status
• Temperature 100.4°F (38°C) or higher
• Stay home until fever-free for 24 hours WITHOUT fever-reducing medication
• Fever indicates your body is fighting infection—you're likely contagious
Vomiting or Diarrhea:
• Stay home until 24-48 hours after last episode
• Highly contagious (norovirus, food poisoning)
• Cannot perform work duties effectively
COVID-19 Positive Test:
• Stay home minimum 5 days from symptom onset or positive test
• Can return after Day 5 if fever-free 24 hours and symptoms improving
• Wear mask around others through Day 10
• Follow updated CDC/workplace guidance
Severe Symptoms:
• Difficulty breathing or shortness of breath
• Chest pain or persistent pressure
• Severe or persistent vomiting
• Confusion or inability to stay awake
• Seek immediate medical attention!
Productive Cough with Colored Mucus:
• Yellow, green, or bloody mucus indicates infection
• Likely bacterial infection—see doctor
• Contagious to others
Known Exposure to Contagious Disease:
• Direct exposure to COVID-19, flu, strep throat, etc.
• Monitor for symptoms
• Test if recommended
• May need to quarantine depending on exposure and vaccination status
✓ When You CAN Return to Work
Generally safe to return when:
• Fever-free for 24 hours without medication
• Symptoms significantly improved
• No vomiting/diarrhea for 24-48 hours
• Able to perform job duties effectively
• No longer in recommended isolation/quarantine period
• Healthcare provider clears you (if needed)
Note: Mild residual symptoms (slight cough, runny nose) may persist. Check with supervisor if unsure.
• Fever-free for 24 hours without medication
• Symptoms significantly improved
• No vomiting/diarrhea for 24-48 hours
• Able to perform job duties effectively
• No longer in recommended isolation/quarantine period
• Healthcare provider clears you (if needed)
Note: Mild residual symptoms (slight cough, runny nose) may persist. Check with supervisor if unsure.
⚠ "Presenteeism" Costs More Than Sick Leave
Coming to work sick:
• Spreads illness to an average of 4-6 coworkers
• Reduces YOUR productivity by 30-60%
• Prolongs YOUR illness
• Creates outbreak that affects entire team
• Costs employers MORE than if you'd stayed home
Don't feel guilty for staying home when sick—it's the right thing to do for everyone!
• Spreads illness to an average of 4-6 coworkers
• Reduces YOUR productivity by 30-60%
• Prolongs YOUR illness
• Creates outbreak that affects entire team
• Costs employers MORE than if you'd stayed home
Don't feel guilty for staying home when sick—it's the right thing to do for everyone!
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Isolation vs. Quarantine
Understanding the difference
Isolation and quarantine are public health practices used to prevent spread of contagious diseases. They're different:
Isolation
Definition: Separating people who ARE sick with a contagious disease from those who are not sick.
Who: People who have tested positive for COVID-19 or have confirmed contagious illness.
Duration: Varies by disease. For COVID-19: minimum 5 days from symptom onset or positive test.
Requirements:
• Stay home (or in designated room if hospitalized)
• Avoid contact with others, even household members when possible
• Wear mask if you must be around others
• Don't share personal items
• Use separate bathroom if possible
• Notify close contacts
End of isolation: Based on symptom improvement and time since positive test/symptom onset. Follow CDC and workplace guidance.
Who: People who have tested positive for COVID-19 or have confirmed contagious illness.
Duration: Varies by disease. For COVID-19: minimum 5 days from symptom onset or positive test.
Requirements:
• Stay home (or in designated room if hospitalized)
• Avoid contact with others, even household members when possible
• Wear mask if you must be around others
• Don't share personal items
• Use separate bathroom if possible
• Notify close contacts
End of isolation: Based on symptom improvement and time since positive test/symptom onset. Follow CDC and workplace guidance.
Quarantine
Definition: Separating people who MIGHT have been exposed to a contagious disease to see if they get sick.
Who: People exposed to contagious disease but not (yet) showing symptoms or testing positive.
Duration: Varies by disease and vaccination status. Previously 14 days; now often shorter with testing.
Requirements:
• Stay home and monitor for symptoms
• Avoid contact with others, especially high-risk individuals
• Get tested if symptoms develop
• May be able to continue work if no symptoms (depending on exposure level and workplace policy)
Note: Quarantine recommendations vary based on vaccination status, previous infection, and type of exposure. Check current CDC guidance and your workplace policy.
Who: People exposed to contagious disease but not (yet) showing symptoms or testing positive.
Duration: Varies by disease and vaccination status. Previously 14 days; now often shorter with testing.
Requirements:
• Stay home and monitor for symptoms
• Avoid contact with others, especially high-risk individuals
• Get tested if symptoms develop
• May be able to continue work if no symptoms (depending on exposure level and workplace policy)
Note: Quarantine recommendations vary based on vaccination status, previous infection, and type of exposure. Check current CDC guidance and your workplace policy.
💡 Simple Way to Remember
ISOLATION = I am sick (confirmed illness, keeping sick people away from healthy)
QUARANTINE = I might get sick (possible exposure, monitoring period to see if symptoms develop)
QUARANTINE = I might get sick (possible exposure, monitoring period to see if symptoms develop)
⚠ Know Your Workplace Policy
Your employer should have policies for:
• When employees must isolate or quarantine
• How to report illness or exposure
• Sick leave and paid time off during isolation/quarantine
• Return-to-work requirements (testing, symptom screening)
• Remote work options during quarantine
Ask your supervisor or HR if you're unsure about these policies!
• When employees must isolate or quarantine
• How to report illness or exposure
• Sick leave and paid time off during isolation/quarantine
• Return-to-work requirements (testing, symptom screening)
• Remote work options during quarantine
Ask your supervisor or HR if you're unsure about these policies!
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Masks and Face Coverings
When and how to use them
Masks reduce transmission of respiratory illnesses by blocking droplets and aerosols. Different situations call for different levels of protection.
😷 Types of Masks
Cloth Masks:
• Multiple layers of tightly woven fabric
• Blocks large droplets
• Less effective than medical masks
• Washable and reusable
• Good for low-risk community settings
Surgical/Medical Masks:
• Disposable three-layer masks
• Better filtration than cloth
• Blocks droplets in both directions
• Single use (dispose after each use)
• Standard for healthcare and higher-risk settings
N95/KN95 Respirators:
• Filters at least 95% of airborne particles
• Tight seal around nose and mouth
• Best protection against aerosols
• Required for some healthcare settings
• Can be used in high-risk situations (crowded indoor spaces, caring for sick person)
• Multiple layers of tightly woven fabric
• Blocks large droplets
• Less effective than medical masks
• Washable and reusable
• Good for low-risk community settings
Surgical/Medical Masks:
• Disposable three-layer masks
• Better filtration than cloth
• Blocks droplets in both directions
• Single use (dispose after each use)
• Standard for healthcare and higher-risk settings
N95/KN95 Respirators:
• Filters at least 95% of airborne particles
• Tight seal around nose and mouth
• Best protection against aerosols
• Required for some healthcare settings
• Can be used in high-risk situations (crowded indoor spaces, caring for sick person)
✓ When to Wear a Mask
Consider wearing a mask when:
• Required by your workplace or local regulations
• You have respiratory symptoms but must leave home (medical appointment)
• Caring for someone who is sick
• In crowded indoor spaces during high transmission periods
• You're at high risk for severe illness
• Community transmission levels are high
• Returning to work after COVID-19 (Days 6-10 after positive test)
Masks are most effective when worn by both infected and uninfected people.
• Required by your workplace or local regulations
• You have respiratory symptoms but must leave home (medical appointment)
• Caring for someone who is sick
• In crowded indoor spaces during high transmission periods
• You're at high risk for severe illness
• Community transmission levels are high
• Returning to work after COVID-19 (Days 6-10 after positive test)
Masks are most effective when worn by both infected and uninfected people.
⚠ Proper Mask Use
DO:
• Wash hands before putting on mask
• Cover both nose and mouth completely
• Fit snugly against sides of face with no gaps
• Secure with ties or ear loops
• Avoid touching mask while wearing it
• Remove by ear loops/ties (don't touch front)
• Wash cloth masks after each use
• Dispose of surgical masks after use
DON'T:
• Wear mask under nose (defeats the purpose!)
• Touch front of mask with hands
• Share masks with others
• Reuse disposable masks
• Wear damaged or wet masks
• Wash hands before putting on mask
• Cover both nose and mouth completely
• Fit snugly against sides of face with no gaps
• Secure with ties or ear loops
• Avoid touching mask while wearing it
• Remove by ear loops/ties (don't touch front)
• Wash cloth masks after each use
• Dispose of surgical masks after use
DON'T:
• Wear mask under nose (defeats the purpose!)
• Touch front of mask with hands
• Share masks with others
• Reuse disposable masks
• Wear damaged or wet masks
Slide 10 of 15
Workplace Cleaning and Disinfection
Reducing surface transmission
While respiratory transmission is primary, contaminated surfaces can still spread germs. Regular cleaning reduces risk.
🧼 Cleaning vs. Disinfecting
Cleaning: Removing dirt, debris, and some germs from surfaces using soap/detergent and water. Reduces number of germs but doesn't kill them all.
Disinfecting: Using chemicals (EPA-registered disinfectants) to kill germs on surfaces. Most effective after cleaning.
Best practice: Clean first, then disinfect high-touch surfaces.
Disinfecting: Using chemicals (EPA-registered disinfectants) to kill germs on surfaces. Most effective after cleaning.
Best practice: Clean first, then disinfect high-touch surfaces.
✓ High-Touch Surfaces to Clean Frequently
Clean and disinfect these surfaces at least daily (more often if heavily used):
• Doorknobs and handles
• Light switches
• Desks and workstations
• Keyboards, mice, phones
• Elevator buttons
• Handrails and grab bars
• Break room: tables, chairs, refrigerator handles, microwave buttons, coffee maker
• Bathroom: faucets, toilet handles, soap dispensers
• Shared equipment: copiers, printers, tools, machinery controls
• Conference room tables and chairs
• Doorknobs and handles
• Light switches
• Desks and workstations
• Keyboards, mice, phones
• Elevator buttons
• Handrails and grab bars
• Break room: tables, chairs, refrigerator handles, microwave buttons, coffee maker
• Bathroom: faucets, toilet handles, soap dispensers
• Shared equipment: copiers, printers, tools, machinery controls
• Conference room tables and chairs
⚠ Personal Workspace Hygiene
YOU are responsible for your personal workspace:
Daily cleaning:
• Wipe down your desk, phone, keyboard, mouse with disinfectant wipes
• Don't eat at your desk (keeps workspace cleaner)
• Dispose of trash daily
• Keep personal items organized
Don't share:
• Phones, headsets
• Keyboards, mice
• Pens, staplers, scissors
• Food, drinks, utensils
• Towels, personal care items
If you must share equipment, disinfect before and after each use!
Daily cleaning:
• Wipe down your desk, phone, keyboard, mouse with disinfectant wipes
• Don't eat at your desk (keeps workspace cleaner)
• Dispose of trash daily
• Keep personal items organized
Don't share:
• Phones, headsets
• Keyboards, mice
• Pens, staplers, scissors
• Food, drinks, utensils
• Towels, personal care items
If you must share equipment, disinfect before and after each use!
💡 Disinfectant Contact Time
Most people don't use disinfectants correctly! Disinfectants need "contact time" (dwell time) to kill germs—usually 3-10 minutes. Don't just spray and immediately wipe dry. Surface must stay visibly wet for the time specified on product label. Read and follow instructions!
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Ventilation and Air Quality
Fresh air reduces disease transmission
Indoor air quality significantly affects infectious disease transmission. Better ventilation = lower risk.
🌬 Why Ventilation Matters
Indoor air can have 2-5x higher concentrations of pollutants and pathogens than outdoor air.
• Infectious aerosols accumulate in poorly ventilated spaces
• Fresh air dilutes and removes contaminated air
• Outdoor air typically has much lower pathogen levels
• Risk of airborne transmission is 20x higher indoors than outdoors
Good ventilation is a key layer of protection against respiratory illnesses.
• Infectious aerosols accumulate in poorly ventilated spaces
• Fresh air dilutes and removes contaminated air
• Outdoor air typically has much lower pathogen levels
• Risk of airborne transmission is 20x higher indoors than outdoors
Good ventilation is a key layer of protection against respiratory illnesses.
✓ Improving Ventilation (What You Can Do)
Actions employees can take:
• Open windows when weather permits (even slightly open helps)
• Open doors to improve cross-ventilation
• Position fans to bring in outdoor air or improve air circulation
• Use outdoor spaces for meetings when possible
• Take breaks outside
• Request ventilation assessment if air feels stale/stuffy
• Report HVAC issues (strange smells, no airflow, temperature problems)
What employers should do:
• Maintain HVAC systems properly
• Upgrade air filters (MERV-13 or higher recommended)
• Increase outdoor air percentage in HVAC systems
• Use portable HEPA air purifiers in high-traffic areas
• Ensure adequate air changes per hour (ACH)
• Consider upper-room UV-C disinfection in some settings
• Open windows when weather permits (even slightly open helps)
• Open doors to improve cross-ventilation
• Position fans to bring in outdoor air or improve air circulation
• Use outdoor spaces for meetings when possible
• Take breaks outside
• Request ventilation assessment if air feels stale/stuffy
• Report HVAC issues (strange smells, no airflow, temperature problems)
What employers should do:
• Maintain HVAC systems properly
• Upgrade air filters (MERV-13 or higher recommended)
• Increase outdoor air percentage in HVAC systems
• Use portable HEPA air purifiers in high-traffic areas
• Ensure adequate air changes per hour (ACH)
• Consider upper-room UV-C disinfection in some settings
⚠ Signs of Poor Ventilation
Indicators your workspace may have ventilation problems:
• Stuffy, stale air
• Persistent odors
• Temperature too hot or too cold
• Humidity too high (feels damp) or too low (dry, static electricity)
• Frequent headaches, fatigue, or respiratory symptoms in workers
• Visible mold or moisture problems
• Windows/doors that don't open
• HVAC system rarely runs or has weak airflow
Report these issues to building maintenance or facilities management!
• Stuffy, stale air
• Persistent odors
• Temperature too hot or too cold
• Humidity too high (feels damp) or too low (dry, static electricity)
• Frequent headaches, fatigue, or respiratory symptoms in workers
• Visible mold or moisture problems
• Windows/doors that don't open
• HVAC system rarely runs or has weak airflow
Report these issues to building maintenance or facilities management!
Slide 12 of 15
Vaccination
Your best protection against serious illness
Vaccines are the most effective tool we have to prevent serious illness from infectious diseases.
Annual Flu Vaccine
Why get it:
• Flu hospitalizes 100,000-700,000 Americans annually
• Vaccine reduces flu illness by 40-60%
• Even if you get flu, symptoms are milder if vaccinated
• Protects vulnerable people around you
When: Get vaccinated in early fall (September-October) before flu season peaks
Who: Everyone 6 months and older, especially:
• Adults 65+
• Pregnant women
• People with chronic health conditions
• Healthcare workers
• Caregivers
Where: Doctor's office, pharmacy, workplace flu clinics, health departments (often free or low-cost)
• Flu hospitalizes 100,000-700,000 Americans annually
• Vaccine reduces flu illness by 40-60%
• Even if you get flu, symptoms are milder if vaccinated
• Protects vulnerable people around you
When: Get vaccinated in early fall (September-October) before flu season peaks
Who: Everyone 6 months and older, especially:
• Adults 65+
• Pregnant women
• People with chronic health conditions
• Healthcare workers
• Caregivers
Where: Doctor's office, pharmacy, workplace flu clinics, health departments (often free or low-cost)
COVID-19 Vaccine
Why get it:
• Dramatically reduces risk of severe illness, hospitalization, and death
• Reduces (but doesn't eliminate) risk of infection
• Shortens illness duration if you do get sick
• Reduces long COVID risk
When: Stay up-to-date with recommended boosters. Check CDC guidance for current recommendations based on age and health status.
Who: Everyone 6 months and older. Especially important for:
• Adults 65+
• People with weakened immune systems
• People with chronic health conditions
• Pregnant women
Where: Widely available at pharmacies, doctor's offices, health departments (free)
• Dramatically reduces risk of severe illness, hospitalization, and death
• Reduces (but doesn't eliminate) risk of infection
• Shortens illness duration if you do get sick
• Reduces long COVID risk
When: Stay up-to-date with recommended boosters. Check CDC guidance for current recommendations based on age and health status.
Who: Everyone 6 months and older. Especially important for:
• Adults 65+
• People with weakened immune systems
• People with chronic health conditions
• Pregnant women
Where: Widely available at pharmacies, doctor's offices, health departments (free)
✓ Workplace Vaccination Programs
Many employers offer:
• On-site flu vaccination clinics (free or low-cost)
• Paid time off for vaccination appointments
• Information about vaccine availability
• Incentives for getting vaccinated
Check with your HR department about available programs!
• On-site flu vaccination clinics (free or low-cost)
• Paid time off for vaccination appointments
• Information about vaccine availability
• Incentives for getting vaccinated
Check with your HR department about available programs!
⚠ Vaccine Misconceptions
Common myths (all FALSE):
• "Flu vaccine gives you the flu" – False. Vaccine contains inactivated virus that cannot cause flu.
• "I'm healthy, I don't need vaccines" – False. Healthy people can get seriously ill and spread disease to vulnerable people.
• "Natural immunity is better than vaccine" – False. Vaccines provide safer, more reliable protection without risk of severe illness.
• "Vaccines have dangerous side effects" – False. Serious side effects are extremely rare. Benefits far outweigh risks.
Talk to your healthcare provider if you have concerns about vaccines!
• "Flu vaccine gives you the flu" – False. Vaccine contains inactivated virus that cannot cause flu.
• "I'm healthy, I don't need vaccines" – False. Healthy people can get seriously ill and spread disease to vulnerable people.
• "Natural immunity is better than vaccine" – False. Vaccines provide safer, more reliable protection without risk of severe illness.
• "Vaccines have dangerous side effects" – False. Serious side effects are extremely rare. Benefits far outweigh risks.
Talk to your healthcare provider if you have concerns about vaccines!
Slide 13 of 15
Pandemic Preparedness
Being ready for future outbreaks
COVID-19 taught us valuable lessons about pandemic response. Being prepared helps workplaces respond effectively to future outbreaks.
📋 Workplace Pandemic Plans Should Include
1. Communication Plan
• How employees will be notified of outbreaks
• Regular updates on workplace cases and precautions
• Clear point of contact for questions/concerns
• Confidential reporting mechanisms
2. Flexible Work Arrangements
• Remote work options for positions that allow it
• Staggered shifts to reduce crowding
• Flexible sick leave policies
• Cross-training to cover essential functions
3. Infection Control Measures
• Hand hygiene stations and supplies
• Enhanced cleaning and disinfection protocols
• Physical distancing measures when needed
• Ventilation improvements
• PPE availability (masks, gloves)
4. Screening and Testing
• Symptom screening procedures
• Access to testing
• Protocols for confirmed cases
• Contact tracing procedures
5. Training and Education
• Regular infectious disease training
• Updated guidance as situations evolve
• Clear procedures everyone understands
• How employees will be notified of outbreaks
• Regular updates on workplace cases and precautions
• Clear point of contact for questions/concerns
• Confidential reporting mechanisms
2. Flexible Work Arrangements
• Remote work options for positions that allow it
• Staggered shifts to reduce crowding
• Flexible sick leave policies
• Cross-training to cover essential functions
3. Infection Control Measures
• Hand hygiene stations and supplies
• Enhanced cleaning and disinfection protocols
• Physical distancing measures when needed
• Ventilation improvements
• PPE availability (masks, gloves)
4. Screening and Testing
• Symptom screening procedures
• Access to testing
• Protocols for confirmed cases
• Contact tracing procedures
5. Training and Education
• Regular infectious disease training
• Updated guidance as situations evolve
• Clear procedures everyone understands
✓ What You Can Do to Prepare
Personal preparedness:
• Stay informed about infectious disease threats
• Keep vaccinations up-to-date
• Practice good hygiene habits consistently (not just during outbreaks)
• Maintain emergency supplies at home (medications, thermometer, basic supplies)
• Know your workplace's emergency procedures
• Have a plan for childcare/eldercare if schools/facilities close
• Build financial reserves if possible
• Identify if you can work remotely if needed
• Stay informed about infectious disease threats
• Keep vaccinations up-to-date
• Practice good hygiene habits consistently (not just during outbreaks)
• Maintain emergency supplies at home (medications, thermometer, basic supplies)
• Know your workplace's emergency procedures
• Have a plan for childcare/eldercare if schools/facilities close
• Build financial reserves if possible
• Identify if you can work remotely if needed
⚠ Early Warning Signs of Outbreaks
Recognize these patterns that may indicate an outbreak:
• Multiple coworkers with similar symptoms in short time period
• Increased absenteeism due to illness
• Local health department reports of disease clusters
• News reports of emerging infectious disease threats
Report unusual patterns to your supervisor and occupational health department!
• Multiple coworkers with similar symptoms in short time period
• Increased absenteeism due to illness
• Local health department reports of disease clusters
• News reports of emerging infectious disease threats
Report unusual patterns to your supervisor and occupational health department!
Slide 14 of 15
Infectious Disease Key Takeaways
Remember these critical points
Essential infectious disease prevention knowledge:
- How diseases spread: Respiratory droplets, airborne transmission, contact (direct and surface), fecal-oral route. Understanding transmission helps you prevent it.
- Common respiratory illnesses: COVID-19, influenza, common cold have overlapping symptoms. Test when symptomatic. Can't tell difference by symptoms alone.
- Hand hygiene is #1 defense: Wash with soap and water for 20 seconds. Scrub all surfaces. Wash after bathroom, before eating, after coughing/sneezing, frequently throughout day.
- Respiratory etiquette matters: Cover coughs/sneezes with tissue or elbow (not hands). Dispose of tissues immediately. Wash hands after. Don't touch your face.
- Stay home when sick: Fever 100.4°F+, vomiting/diarrhea, COVID-positive, severe symptoms. Stay home until fever-free 24 hours and symptoms improving. Presenteeism spreads disease.
- Isolation vs. quarantine: Isolation = you are sick (confirmed). Quarantine = you might be sick (exposed, monitoring). Different requirements for each.
- Masks reduce transmission: Most effective when worn correctly (cover nose and mouth). Useful in crowded indoor spaces, when sick, caring for sick person, during outbreaks.
- Clean high-touch surfaces: Doorknobs, phones, keyboards, break room equipment daily or more. Your workspace is your responsibility. Don't share personal items.
- Ventilation reduces risk: Open windows when possible. Fresh air dilutes pathogens. Report poor ventilation. Outdoor activities safer than indoor.
- Get vaccinated: Annual flu shot and COVID boosters. Reduces severe illness, hospitalization, death. Protects you and vulnerable people around you.
✓ Layered Protection Works Best
No single measure provides 100% protection. Use multiple layers:
• Vaccination (reduces severity)
• Hand hygiene (prevents transmission)
• Respiratory etiquette (protects others)
• Staying home when sick (breaks transmission chain)
• Masks when appropriate (blocks droplets)
• Ventilation (dilutes aerosols)
• Cleaning surfaces (reduces contact transmission)
Together, these create a strong defense against infectious disease!
• Vaccination (reduces severity)
• Hand hygiene (prevents transmission)
• Respiratory etiquette (protects others)
• Staying home when sick (breaks transmission chain)
• Masks when appropriate (blocks droplets)
• Ventilation (dilutes aerosols)
• Cleaning surfaces (reduces contact transmission)
Together, these create a strong defense against infectious disease!
Quiz Question 1 of 3
Knowledge Check
What is the most effective way to prevent the spread of infectious diseases in the workplace?
Wearing a mask at all times
Proper hand hygiene (washing hands with soap and water for 20 seconds)
Taking vitamins and supplements
Avoiding all contact with coworkers
Quiz Question 2 of 3
Knowledge Check
When should you stay home from work due to illness?
Only if you can't get out of bed
When you have a fever of 100.4°F or higher, vomiting/diarrhea, or COVID-19 positive test
Never - always come to work to show dedication
Only during a declared pandemic
Quiz Question 3 of 3
Knowledge Check
What is the difference between isolation and quarantine?
They are the same thing
Isolation is for people who ARE sick; quarantine is for people who MIGHT be sick (exposed but not symptomatic)
Quarantine is more strict than isolation
Isolation is only for COVID-19
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