The True Story: Thailand's Flu Figures for Early 2026

Bangkok Biz News reported on 11 March 2026 that DDC Director-General Dr. Monthian Kanasawat said that from 1 January to 9 March 2026 there were 137,276 flu cases and 8 deaths, with 15,041 hospitalised.

The highest rates were among children aged 5-9, followed by ages 0-4 and 10-14. Phayao, Lampang, Phitsanulok, Chiang Mai and Ubon Ratchathani had high rates, and the DDC warned 2026 could see more cases than the previous year, especially mid-year.

The Key Lesson: Children from Many Schools in One Room

Tutoring schools, language centres and learning centres in Thailand gather children from many schools in air-conditioned rooms. The lessons are:

• School-age children have the highest rates according to the DDC
• Closed air-conditioned classrooms help germs spread
• Children with fever or cough should stay home and can join online
• Desks, chairs and whiteboard pens are shared every lesson
• A mid-year surge is possible, so prepare before courses start

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 Tutoring Schools and Learning Centres

1. Children from many schools mixing: likelihood high / impact medium / level high. Mitigation: Fever checks at the door and masks. Owner: Centre manager
2. Air-conditioned rooms closed all day: likelihood high / impact medium / level high. Mitigation: Ventilate between lessons. Owner: Facilities
3. Parents sending sick children: likelihood medium / impact medium / level medium. Mitigation: Online make-up classes. Owner: Academic team
4. Teachers too ill to teach: likelihood medium / impact high / level high. Mitigation: Backup teachers and vaccination. Owner: Centre manager
5. Shared desks and equipment: likelihood high / impact medium / level high. Mitigation: Wipe between lessons. Owner: Housekeeping

7 Steps for Tutoring Schools to Prevent Flu

1. Check temperatures at the door and offer masks
2. Ask parents to keep sick children home with online make-up classes
3. Ventilate between lessons, even for a few minutes
4. Wipe desks, chairs and handles between lessons
5. ULV-fog after classes; areas are usable about 30 minutes later
6. Ozone-treat classrooms during weekly closures with nobody inside, then ventilate
7. Follow DDC updates ahead of the mid-year peak

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: Which children get flu most? A: DDC data from early 2026 shows children aged 5-9 had the highest rate.

Q: Can evening classes run after fogging? A: Yes. After ULV fogging, areas are typically usable about 30 minutes later.

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 tutoring schools get a tax invoice? 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

Thailand's own figures show school-age children are hit hardest. Clean learning centres keep their lessons running. Reduce the risk with the World Health Disinfection disinfection service for classrooms, parent waiting areas and restrooms, and the ozone treatment service for closed air-conditioned classrooms. To book, call 065-556-6294 or LINE @whd268.

Call 065-556-6294 | LINE: @whd268