Why Illness Spikes and How Proper Cleaning Helps
Even though most Las Vegas commercial buildings keep their HVAC systems running year-round, illness rates still climb dramatically every November through February. The combination of holiday gatherings, parties, Black Friday crowds, end-of-year deadlines, and thousands of winter visitors creates the perfect storm for colds, flu, COVID, and norovirus to spread quickly through offices, medical centers, retail spaces, and hospitality back-of-house areas across Clark County.
Employers see the same patterns annually: absenteeism jumps 20–30% during the holidays, largely because more people are sharing the same indoor spaces while viruses circulate more easily in our dry desert air.
Here’s what’s really happening inside your building right now — and the practical, evidence-based steps facility managers and business owners can take to reduce risk.
Why Workplace Illness Increases During the Las Vegas Holiday Season
- Higher Occupancy & More Visitors — Holiday potlucks, client meetings, and family members stopping by increase the number of people breathing the same recycled air and touching the same surfaces.
- Dry Indoor Air — Southern Nevada’s winter humidity routinely drops below 30% inside climate-controlled buildings. Studies from the NIH and Mayo Clinic show that influenza and other respiratory viruses survive longer and transmit more efficiently in low-humidity environments.
- More High-Touch Activity — Holiday lunches, gift exchanges, and extended hours mean more hands on door handles, elevator buttons, break-room appliances, and shared keyboards.
- Dust & Allergen Recirculation — Fine desert dust that enters through doors and loading docks gets continuously recirculated by HVAC systems, irritating airways and making people more susceptible to infection.
CDC-Recommended Flu & Respiratory Illness Prevention Tips for Workplaces
The Centers for Disease Control and Prevention (CDC) updates its guidance every season. Here are the key actions they recommend for businesses and facilities this year:
- Encourage Everyone to Get Vaccinated The single most effective way to prevent flu is the annual flu vaccine. The CDC recommends everyone 6 months and older get vaccinated (ideally by the end of October, but it’s never too late).
- Promote Everyday Preventive Actions
- Stay home when sick (and allow employees to stay home without penalty).
- Cover coughs and sneezes with a tissue or elbow.
- Wash hands often with soap and water for at least 20 seconds; use hand sanitizer (≥60% alcohol) when soap isn’t available.
- Avoid touching eyes, nose, and mouth.
- Clean and Disinfect Frequently Touched Surfaces Daily The CDC specifically calls out door handles, keyboards, phones, remote controls, and restroom surfaces. Use EPA-registered disinfectants from List N with proven activity against flu viruses and SARS-CoV-2.
- Improve Ventilation Even in sealed buildings, bring in as much outdoor air as possible, upgrade HVAC filters to MERV-13 or higher, and use portable HEPA air cleaners in high-traffic areas.
- Consider Masking in Higher-Risk Situations During periods of high community transmission, encourage or require well-fitting masks in crowded indoor spaces.
Holiday Commercial Cleaning Checklist for Las Vegas Facilities
- Upgrade HVAC Maintenance — Change filters monthly and schedule professional air-duct cleaning to remove years of dust buildup common in Clark County buildings.
- Add Humidity Control — Maintaining 40–60% relative humidity dramatically reduces airborne virus survival (a strategy backed by CDC and ASHRAE).
- Deep Clean Carpets & Upholstery — Hot-water extraction with antimicrobial treatment removes allergens and pathogens that get stirred up with increased foot traffic.
- Post-Event Rapid Response — After any gathering, disinfect surfaces the same day to break the chain of transmission.
The Real-World Impact
Facilities that follow CDC guidelines plus enhanced cleaning and ventilation routinely see:
- 20–30% fewer sick days (per CDC and ISSA workplace studies)
- Lower healthcare costs and higher productivity
- Stronger employee confidence during the busy holiday season
Ready to Get Holiday-Ready?
If you’d like a complimentary facility walkthrough and a customized winter health protocol based on the latest CDC guidance — whether you’re in Summerlin, Henderson, Downtown Las Vegas, or anywhere in Clark County — our team is ready to assist.
Request a Free Consultation
Or call/text us at (702) 935-2002
From everyone at Professionally Clean, stay healthy and enjoy a safe, productive holiday season!
Professionally Clean is the trusted commercial janitorial partner for Las Vegas and Clark County businesses. Fully licensed, bonded, insured, and background-checked teams.