The True Story: Double Last Year

KSL, citing Reuters, reported on 5 January 2026 that the US CDC labelled the 2025–26 flu season moderately severe for the first time, estimating at least 11 million illnesses, 120,000 hospitalisations and 5,000 deaths, compared with 5.3 million, 63,000 and 2,700 at the same point the previous season.

Data showed H3N2 made up over 91% of subtyped influenza A, and of 389 genetically characterised viruses 90.5% were subclade K, while respiratory illness accounted for 8.2% of healthcare visits. Dr Eric Ascher of Lenox Hill Hospital expected the peak was still one to two weeks away.

The Key Lesson: One Sick Employee Can Stop a Whole Department

Thai corporate offices have hundreds of staff sharing lifts, meeting rooms and pantries. Points to watch are:

• Meeting rooms booked all day
• Pantries and water coolers
• Lifts and card gates at start time
• Sick staff coming in for urgent work
• Open-plan desks close together

How Flu Spreads

According to the World Health Organization, seasonal influenza spreads easily where people gather, such as schools and nursing homes. It spreads through droplets when people cough or sneeze, and through hands that touch contaminated surfaces and then the eyes, nose or mouth. Most people recover within a week, but young children, older adults, pregnant women and people with chronic illness are at risk of severe disease. Influenza is an enveloped virus, which suitable disinfectants can inactivate.

Risk Register for Corporate Offices

1. Sick staff come to work: likelihood high / impact high / level critical. Mitigation: encourage remote work with symptoms. Owner: HR
2. Meeting rooms used back to back: likelihood high / impact medium / level high. Mitigation: air rooms and wipe tables between meetings. Owner: admin
3. Shared pantry and coolers: likelihood high / impact medium / level high. Mitigation: wipe buttons and handles every 2 hours. Owner: housekeeper
4. Crowded lifts at start time: likelihood high / impact medium / level high. Mitigation: stagger start times. Owner: HR
5. Office not disinfected in outbreaks: likelihood medium / impact medium / level medium. Mitigation: fog and ozone-treat meeting rooms at weekends. Owner: facilities

Ways to Reduce Flu Risk in Offices

1. Encourage remote work with symptoms
2. Run on-site vaccination before the season
3. Air meeting rooms between meetings
4. Wipe pantries and coolers
5. Stagger start times
6. Place hand gel on every floor
7. Fog and ozone-treat meeting rooms at weekends

How ULV Disinfection Fogging Helps

The World Health Disinfection disinfection service uses ULV fogging machines that turn the disinfectant into a fine mist. It settles across the whole area, including corners, curtains, upholstery and surfaces that hand wiping cannot reach.

• Whole-area coverage without relying on wiping spot by spot
• Quick return to use, typically about 30 minutes after fogging
• Uses Chemgene HLD4H, which meets EN 14476 for virucidal activity according to the product page
• The team wears full protective equipment, so owners and staff do not take the risk themselves
• Report and photos after the job for customers, management or authorities
• Tax invoice with 3% withholding tax for companies and agencies

Ozone Treatment for Closed Rooms and Stuffy Spaces

The World Health Disinfection ozone treatment service uses machines that generate ozone gas from oxygen in the air. It suits closed rooms such as meeting rooms, bedrooms, classrooms, sick bays and vans, helping reduce germs in the air and on surfaces and removing stale odours. Ozone breaks back down into oxygen after treatment, leaving no residue.

• Works alongside disinfection fogging: spray or wipe surfaces first, then use ozone for the air and corners of closed rooms
• No people or pets in the room during treatment: the team seals the room and runs a timer
• Ventilate after treatment before normal use resumes
• Machines tested by Intertek, according to WHD's service page
• Ideal after someone has been ill, such as recovered patients' rooms, shared bedrooms and shuttle vans

Before and After

Frequently Asked Questions

Q: What did the CDC estimate for 2025–26? A: At least 11 million illnesses, 120,000 hospitalisations and 5,000 deaths as of early January 2026.

Q: What strain dominated in the US? A: H3N2 at over 91%, with 90.5% of characterised viruses being subclade K.

Q: Does the fogging disinfectant work on flu? A: The team uses Chemgene HLD4H, which meets EN 14476 for virucidal activity according to the product page, and influenza is an enveloped virus that suitable disinfectants can inactivate. Fogging does not replace vaccination or handwashing.

Q: Can I enter the room right after ozone treatment? A: No one should be in the room during treatment. Ventilate afterwards before normal use; the team will advise the right time for the room size.

Q: Can companies get a tax invoice with 3% withholding? A: Yes. Tax invoices are issued and 3% withholding tax is supported. Call 065-556-6294 or LINE @whd268.

Related Links and Sources

• World Health Disinfection disinfection service
• World Health Disinfection ozone treatment service
• Chemgene HLD4H disinfectant and price
• Influenza information from Thailand's Department of Disease Control, hotline 1422
• WHO seasonal influenza fact sheet

Prevent Flu with Disinfection Fogging and Ozone Treatment

The real news from the US shows this flu season was double the last. Prepared offices keep business running even in outbreak season. Reduce the risk with the World Health Disinfection disinfection service for work floors, pantries and lifts, and the ozone treatment service for meeting rooms and executive rooms. To book, call 065-556-6294 or LINE @whd268.

Call 065-556-6294 | LINE: @whd268