Chicago flu season peaks November through March. Offices become transmission points. One sick employee touches a door handle. By Friday, half the team is out. Sick days spike. Productivity drops. Projects get delayed.
Quick Answer: Flu viruses survive on surfaces up to 48 hours. Door handles, keyboards, and break room faucets are transmission hotspots. Daily disinfection of high-touch surfaces reduces spread. Offices cleaned 3x/week see 46% fewer sick days than those cleaned less often.
### How Flu Spreads in Offices
Touch Points
Every surface someone touches is a potential transmission point. Door handles. Keyboard surfaces. Phone handsets. The break room faucet. The microwave handle. These get touched dozens of times daily.
Airborne Droplets
Coughing and sneezing spread droplets. Those droplets land on surfaces. People touch those surfaces. Then they touch their face. That's how transmission happens.
Shared Spaces
Break rooms. Meeting rooms. Reception areas. These shared spaces concentrate germs from multiple people.
Asymptomatic Spread
People are contagious before they show symptoms. The coworker who seems healthy might be spreading flu right now.
### What High-Touch Surfaces Should You Target?
TL;DR: Door handles, keyboard surfaces, break room faucets, microwave handles, and restroom fixtures have the most germ transfer. These need daily disinfection during flu season.
Entry Points
- Door handles (every door)
- Light switches
- Elevator buttons
- Reception desk surfaces
Workstations
- Keyboard surfaces (not screens)
- Mouse surfaces
- Phone handsets
- Desk surfaces
Break Room Hotspots
- Refrigerator handle
- Microwave handle and buttons
- Coffee pot handle
- Water cooler button
- Sink faucet
- Cabinet handles
Restrooms
- Door handles (in and out)
- Faucet handles
- Stall locks
- Soap dispensers
Meeting Rooms
- Door handles
- Light switches
- Table surfaces
- Chair backs and arms
### What's the Difference Between Disinfection and Cleaning?
TL;DR: Cleaning removes visible dirt but doesn't kill germs. Disinfection kills germs but requires contact time (2-10 minutes). You need both: clean first to remove dirt, then disinfect to kill viruses.
Cleaning removes dirt.
Cleaning removes visible dirt and debris. It doesn't necessarily kill germs.
Disinfecting kills germs.
Disinfecting uses chemicals to kill bacteria and viruses. It requires contact time — the surface must stay wet for the time specified on the product label.
You need both.
Clean first to remove dirt. Disinfect second to kill germs. Products labeled "cleaner/disinfectant" can do both, but may need more contact time.
Contact time matters.
Most disinfectants need 2-10 minutes of contact time to kill viruses. Spray and wipe doesn't work. Spray, wait, then wipe.
### How Does Cleaning Change During Flu Season?
TL;DR: During flu season, offices need daily disinfection of high-touch surfaces, more frequent restroom cleaning, EPA-registered disinfectants with flu claims, and extra attention to break rooms and shared equipment.
Increased Frequency
Daily disinfection of high-touch surfaces. More frequent restroom cleaning. Break rooms cleaned multiple times daily.
Focus on Touch Points
More attention to handles, switches, and buttons. Less focus on floors (flu doesn't spread through floors).
Product Selection
Use disinfectants proven to kill influenza. EPA-registered products with flu claims. Not all cleaners kill flu virus.
Employee Areas
More attention to shared surfaces. Keyboards. Phone handsets. Desk surfaces. These get skipped in regular cleaning but matter during flu season.
### What Is the Chicago Flu Season Timeline?
TL;DR: Chicago flu season runs November through March, with peak activity in December through February. Increase cleaning frequency in November, maintain aggressive disinfection January-February, and begin reducing in March.
November: Start of Season
Flu cases start appearing. Increase cleaning frequency. Begin disinfection of high-touch surfaces. Encourage flu shots.
December: Rising Cases
Flu spreads at holiday events. Peak travel time. Maximum disinfection frequency. Watch for sick employees.
January: Peak Season
Highest flu activity. Maintain aggressive cleaning. Consider additional measures if cases are high in your office.
February: Continued Peak
Flu continues. Don't reduce cleaning yet. Weather keeps people indoors, spreading germs.
March: Declining Cases
Flu starts to decline. Can begin to reduce cleaning frequency. Still maintain daily disinfection of touch points.
### What Should Cleaning Companies Do During Flu Season?
TL;DR: Cleaning companies should provide daily disinfection with EPA-registered flu-killing products, focus on high-touch surfaces, allow proper contact time (not spray-and-wipe), and give extra attention to break rooms and restrooms.
Daily Disinfection
High-touch surfaces disinfected daily. Not just cleaned — disinfected with proper contact time.
Proper Products
Use EPA-registered disinfectants with flu claims. Not all products kill influenza. Ask for product names.
Focus on Hotspots
More time on handles, switches, and buttons. Less time on floors and surfaces that don't transmit flu.
Break Room Attention
Break rooms are flu hotspots. Extra attention to refrigerator handles, microwave buttons, and faucets.
Restroom Intensity
Restrooms need aggressive cleaning during flu season. Multiple daily cleanings. Disinfection of all touch points.
### What Can Offices Do to Prevent Flu Spread?
TL;DR: Offices should encourage hand washing, provide hand sanitizer, remind employees not to touch their faces, support staying home when sick, consider flu shot clinics, and improve ventilation.
Encourage Hand Washing
Post reminders in restrooms. Provide good soap. Hand washing is the single most effective prevention.
Provide Hand Sanitizer
Place sanitizer at entry points, in meeting rooms, and near shared equipment. Encourage use.
Don't Touch Your Face
The flu virus enters through eyes, nose, and mouth. Touching your face with contaminated hands spreads flu.
Stay Home When Sick
One sick employee infects others. Encourage people to stay home when they have symptoms.
Get Vaccinated
Flu shots reduce illness severity and spread. Consider hosting a flu shot clinic at your office.
Ventilation
Fresh air reduces virus concentration. If possible, increase ventilation during flu season.
### What Does Flu Season Cost Offices?
TL;DR: The average flu case causes 3-5 missed work days. Daily disinfection during flu season costs $200-$500/month extra. A flu outbreak costing $10,000+ in lost productivity makes prevention the cheaper option.
Sick Days
The average flu case causes 3-5 missed work days. Multiply that across your team.
Presenteeism
People who come to work sick are less productive. They also spread illness to others.
Healthcare Costs
Doctor visits. Medications. Complications. Flu costs add up.
Lost Productivity
Projects delayed. Deadlines missed. Team impact. Flu season productivity loss is significant.
Cost of Prevention:
Daily disinfection during flu season: $200-$500/month extra for a medium office.
Cost of Outbreak:
Half your team out sick for a week: $10,000+ in lost productivity, plus healthcare costs, plus delayed projects.
The math favors prevention.
### Should You Use Professional or In-House Disinfection?
TL;DR: In-house staff can wipe surfaces but often skip contact time and miss high-touch areas. Professional disinfection ensures proper technique, EPA-registered products, and accountability. Both together is ideal.
In-House Disinfection:
Staff may not use products correctly. Contact time may be skipped. High-touch surfaces may be missed. Not their primary focus.
Professional Disinfection:
Trained on proper product use. Know which surfaces to target. Follow contact time requirements. Accountability for completion.
The Gap:
In-house staff can do daily wiping, but professional disinfection ensures proper technique. Both together is ideal.
### What Questions Should You Ask About Flu Season Cleaning?
TL;DR: Ask about EPA-registered disinfectants with flu claims, contact time compliance, specific high-touch surfaces targeted, break room cleaning protocols, and documentation availability.
What disinfectants do you use?
They should name EPA-registered products with flu claims. Household cleaners aren't adequate.
Do you follow contact time requirements?
Spray and wipe isn't enough. They should describe proper contact time.
Which surfaces do you target during flu season?
They should mention high-touch surfaces: handles, switches, break room equipment. Not just general cleaning.
How do you clean break rooms differently during flu season?
Break rooms need extra attention. They should describe more frequent cleaning of handles, buttons, and faucets.
Can you provide documentation?
You may want proof of disinfection. Cleaning logs show what was done and when.
Need flu season cleaning for your Chicago office? Get a free quote or call 630-349-2862. Daily disinfection of high-touch surfaces.