HFMD Outbreak Forced a Nursery to Close for 2 Weeks - AIROFOG U240 Disinfects the Whole School in 30 Minutes
Last updated: 4 Jun 2026 | 35 Views |
HFMD Outbreak in a Nursery: 12 Sick Children in One Week — A Crisis Ended by the AIROFOG U240
A true-to-life story from a Lat Phrao nursery that nearly closed for good because of invisible germs — and how the AIROFOG U240 ULV fogging machine turned the crisis into the school’s strongest selling point.
The Monday Morning Teacher Prae Will Never Forget
Teacher Prae, 38, has run a small nursery in Lat Phrao, Bangkok for six years, caring for 45 children aged one to four. On a Monday morning in early July, the mother of two-year-old Khao Pun called: her son had a fever and tiny blisters on his palms, soles, and inside his mouth. The diagnosis was Hand, Foot and Mouth Disease (HFMD).
Prae assumed it was an isolated case. Within three days, seven children were sick. By the end of the week the number reached twelve. The parents’ LINE group buzzed every hour. Some asked bluntly: “How does this school clean? Why is the whole class sick?” Five families withdrew their children immediately.
The district public health office inspected the school and ordered a two-week closure to break the chain of infection. That meant more than 90,000 baht in lost revenue while rent and the salaries of six teaching assistants still had to be paid in full.
The Damage Goes Far Beyond Numbers
Children’s health: HFMD is caused by enteroviruses (Enterovirus 71 and Coxsackievirus), spreading through saliva, mucus, stool and contaminated surfaces. Young children suffer high fever and painful mouth ulcers; severe cases can develop life-threatening neurological complications. According to the World Health Organization, HFMD outbreaks concentrate in childcare centers and kindergartens across Asia, with tens of thousands of cases in Thailand every year.
Money: Two weeks closed = 90,000 baht gone. Two visits from an external disinfection contractor added 16,000 baht. The five withdrawn children represented over 300,000 baht in lost annual revenue.
Reputation: A parent posted in a local Facebook mums’ group: “HFMD outbreak at a nursery around here — be careful.” One post, dozens of shares. Enquiry calls from new parents, once weekly, went silent for a month.
Why Ordinary Cleaning Failed
- Wiping cannot reach everything — germs sit on door handles, inside toy crevices, under tables, on cushion seams, stair rails and curtains: hundreds of touchpoints no cloth ever covers.
- Germs float in the air — droplets from coughing children linger in air-conditioned rooms with poor ventilation. Surface wiping does nothing about airborne contamination.
- Enteroviruses are tough — they are non-enveloped viruses, poorly affected by plain alcohol. You need the right disinfectant, delivered so it actually contacts the virus everywhere.
- Outsourced fogging is costly and slow — 8,000 baht per visit, booked days in advance, while real prevention needs to happen every single week.
The Turning Point: the AIROFOG U240 ULV Fogging Machine
A friend working in infection control at a private hospital told Prae that hospitals rely on ULV foggers to disinfect patient rooms — and recommended the AIROFOG U240 ULV fogging machine from Germany, supplied by World Health Disinfection.
ULV (Ultra Low Volume) technology turns disinfectant into an ultra-fine mist of just 15-30 microns — many times finer than a human hair. Droplets this small drift through the entire room, penetrating every crevice a cloth can never reach, treating both surfaces and the air itself.
Key specifications: a 38,000 rpm electric motor, adjustable flow rate of 0-150 ml/min, compatible with both water- and oil-based solutions, a 5-litre UV-resistant tank, flame-retardant nylon body, and a weight of only 3.1 kg — light enough for any teacher to carry and operate alone.
10 Reasons Nurseries Across Thailand Choose the AIROFOG U240
- Ultra-fine 15-30 micron mist covers air and surfaces alike, even inside toy bins and under furniture.
- One classroom in 5-10 minutes — the entire school done within 30 minutes after the children go home.
- Only 3.1 kg — staff can do it themselves, no waiting for contractors.
- Works with water- and oil-based solutions, including hospital-grade disinfectants effective against enteroviruses.
- Six adjustable output levels — gentle misting in nap rooms, full power in large activity halls.
- Flexible trunk-style nozzle reaches under tables, behind cabinets and into corners.
- Plug in and go — no fuel mixing, no smoke, no exhaust fumes. Safe for children’s spaces.
- German engineering — Airofog equipment is used by public health agencies and hospitals worldwide.
- Pays for itself — two or three outsourced fogging visits cost as much as owning the machine for years.
- Free expert advice from the WHD team on disinfectants, technique and frequency for childcare settings — call 065-556-6294.
Before / After — Measurable Results
| Before AIROFOG U240 | After AIROFOG U240 |
|---|---|
| HFMD outbreak: 12 sick children in one week, school closed for two weeks | The entire following term passed without a single outbreak |
| 8,000 baht per outsourced fogging visit, 3-5 day waiting list | Teachers fog every Friday evening; disinfectant costs a few hundred baht per month |
| Five children withdrawn, zero new enrolments | “Weekly ULV disinfection” became a selling point — eight new enrolments in one term |
| Teachers frequently off sick with infections caught from the children | Staff sick leave cut by more than half |
In Teacher Prae’s Own Words
“I hesitated before ordering — I was afraid it would be complicated. But it arrived, I plugged it in, filled the tank, pressed one button, done. Much lighter than I expected. Our teachers take turns fogging every Friday evening. Parents see the photos we post in the LINE group and feel reassured — some families told us they chose our nursery because of it. That crisis ended up making our school better than before.” — Teacher Prae, nursery owner, Lat Phrao
Frequently Asked Questions
Q: Can children re-enter the room right after fogging?
A: Fog after hours, keep the room closed for the disinfectant’s recommended contact time (typically 30-60 minutes), then ventilate before use. The WHD team can recommend child-safe solutions.
Q: How is this different from a thermal fogger?
A: Thermal foggers burn fuel and produce smoke — suited to outdoor work. The U240 is an electric cold-mist ULV unit: no smoke, no fumes, designed for indoor disinfection.
Q: What else can it do?
A: It also handles indoor mosquito and insect control and odour neutralisation, since it accepts both water- and oil-based solutions.
Q: What about dust mites in the children’s bedding?
A: Pair the U240 with WHD’s on-site dust mite removal service — deep cleaning for mattresses, cushions and carpets, ideal for nurseries with many nap mattresses.
Don’t Wait for the Next Outbreak
One machine protects the whole school — far cheaper than two weeks of closure.
See AIROFOG U240 Details and Price — Click Here
Call 065-556-6294 | LINE: @whd268
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AIROFOG U240 ULV fogging machine | nursery and school disinfection | HFMD prevention | World Health Disinfection Tel. 065-556-6294
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