The True Story: Five Times Higher in Three Months

VietNamNet reported on 27 March 2026 that Vietnam recorded about 25,094 HFMD cases in the first three months of 2026, about five times the same period of 2025, with four child deaths and 71.9% of cases in the south.

Children aged 1-5, who typically attend nurseries and kindergartens, made up 92.7%. The health ministry issued an urgent directive for schools and nurseries to follow the three cleans and regularly disinfect classrooms, toys and frequently touched surfaces.

The Key Lesson: The Three Cleans for Young Children

Thai nurseries and kindergartens care for children who still put hands in mouths and share toys. The lessons are:

• Clean food and water, with separate utensils per child
• A clean environment: toys, floors and nap mats
• Clean hands, washed with soap before meals and after the toilet
• Sick children stay home until a doctor allows return
• Clean on a schedule, not only when a child is ill

How Germs Spread Through Surfaces

According to the US Centers for Disease Control and Prevention (CDC), norovirus spreads through sick people, food and contaminated surfaces. After vomiting or diarrhoea, clean and disinfect the entire area immediately with a 1,000 to 5,000 ppm chlorine bleach solution or a disinfectant with a norovirus claim, leaving it on for at least 5 minutes. For hand, foot and mouth disease, Thailand's Department of Disease Control advises cleaning classrooms, toilets and toys with suitable products such as disinfectant or diluted bleach.

Risk Register for Nurseries and Kindergartens

1. Children mouthing toys: likelihood high / impact medium / level high. Mitigation: Clean toys daily. Owner: Carers
2. Nappy changing in classrooms: likelihood medium / impact medium / level medium. Mitigation: Separate changing point wiped each time. Owner: Carers
3. Shared nap mats: likelihood medium / impact medium / level medium. Mitigation: Personal mats laundered regularly. Owner: Housekeeping
4. Parents sending sick children: likelihood medium / impact high / level high. Mitigation: Door screening and stay-home policy. Owner: Management
5. Shared cups and spoons: likelihood medium / impact medium / level medium. Mitigation: Separate utensils per child. Owner: Kitchen

7 Steps for Nurseries Following the Three Cleans

1. Screen children every morning: fever, mouth ulcers, hand and foot blisters
2. Separate cups, spoons and face cloths per child
3. Wash hands with soap before meals and after the toilet
4. Clean toys daily with suitable products
5. ULV-fog after the day ends; areas are usable about 30 minutes later
6. Ozone-treat nap rooms with nobody inside, then ventilate
7. Inform parents when a case is found and advise seeing a doctor

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: Why are 1-5-year-olds most at risk? A: Vietnamese data from 2026 shows they were 92.7% of cases, as they are together and share toys.

Q: When can a children's room be used after fogging? A: After ULV fogging, areas are typically usable about 30 minutes later.

Q: What disinfectant does the germ elimination service use? A: The team chooses products by germ and setting, including Chemgene HLD4H, which meets EN 14476 according to the product page. For norovirus, the CDC recommends chlorine bleach or a disinfectant with a norovirus claim; ask the team to choose the right product for the job.

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

Q: Can nurseries 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
• Communicable disease information from Thailand's Department of Disease Control, hotline 1422
• CDC guidance on cleaning to prevent norovirus

Eliminate Germs with Disinfection Fogging and Ozone Treatment

Vietnam's fivefold rise shows that young children need the most care. The three cleans can start today. Reduce the risk with the World Health Disinfection disinfection service for classrooms, nap rooms and children's restrooms, and the ozone treatment service for nap rooms and toy rooms. To book, call 065-556-6294 or LINE @whd268.

Call 065-556-6294 | LINE: @whd268