The True Story: Healthy Children Can Become Seriously Ill

On 15 September 2026, Taiwan's CDC reported 136,796 visits for flu-like illness in one week, up 16.5%, and 21 deaths, the highest weekly total in five years, with influenza A(H1N1) at 82.2%.

Lin Yung-ching, a CDC physician, described a one-year-old boy in southern Taiwan with no underlying conditions who developed encephalitis associated with influenza A. He was conscious and stable, while 68.3% of severe cases had not received the latest flu vaccine.

The Key Lesson: Toddlers Share the Same Toys, So Flu Passes Easily

Mall playgrounds, toddler music classes and ball pits see children from many families every day. Points to watch are:

• Ball pits and plastic balls that go into mouths
• Toys and children's instruments passed around every class
• Crawling mats and slides touching children's skin
• Changing rooms used in turn
• Parents bringing sick children because the class is booked

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 Indoor Playgrounds and Toddler Classes

1. Children with fever or runny nose attend: likelihood high / impact high / level critical. Mitigation: screen at entry and offer free rescheduling when ill. Owner: branch manager
2. Ball-pit balls not washed: likelihood high / impact medium / level high. Mitigation: wash and disinfect balls on a schedule. Owner: cleaning team
3. Toys and instruments not wiped between classes: likelihood high / impact medium / level high. Mitigation: wipe after every class. Owner: teacher
4. Crawling mats not disinfected: likelihood high / impact medium / level high. Mitigation: wipe mats after every session and fog after closing. Owner: cleaning team
5. Closed rooms with little airflow: likelihood medium / impact medium / level medium. Mitigation: ozone-treat rooms after closing on a schedule. Owner: branch manager

Ways to Reduce Flu Risk in Playgrounds

1. Check for fever at the entrance
2. Offer free rescheduling when children are ill
3. Have everyone wash hands before playing
4. Wipe toys and instruments after every class
5. Wash ball-pit balls on a schedule
6. Fog play areas after closing
7. Ozone-treat children's classrooms on a schedule

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: Can flu really cause encephalitis in children? A: Taiwan's CDC reported a healthy one-year-old with encephalitis associated with influenza A in September 2026.

Q: Which symptoms need urgent hospital care? A: Drowsiness or being hard to wake, seizures, fast breathing or high fever that won't come down; see a doctor at once.

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 playgrounds or children's class providers 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

The true story from Taiwan shows healthy children can become seriously ill. Playgrounds with systematic cleaning let parents bring children with confidence. Reduce the risk with the World Health Disinfection disinfection service for play areas, ball pits and changing rooms, and the ozone treatment service for music class rooms and children's activity rooms. To book, call 065-556-6294 or LINE @whd268.

Call 065-556-6294 | LINE: @whd268