The True Story: Clusters Surge Before a Big Exam

The Vibes reported on 13 October 2025 that Education Director-General Dr Mohd Azam Ahmad said about 6,000 students nationwide had flu, and the health ministry reported 97 influenza A and B clusters in epidemiological week 40, up from 14 the week before, mostly in educational institutions.

Some schools closed on district health office advice, and schools were reminded to encourage masks and reduce large group activities, as the ministry prepared for SPM exams starting on 3 November 2025.

The Key Lesson: Students Perform Best When Test Centres Are Safe

University entrance, civil service and licensing exams in Thailand gather hundreds of candidates in one room. The lessons are:

• Flu does not wait for exam season; prepare in advance
• Exam rooms stay closed for hours, letting germs build up
• Candidates with symptoms should have a separate room
• Invigilators should wear masks and watch for symptoms
• Clean before and after every session, not only on day one

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 Exam Halls and Test Centres

1. Many candidates in a closed room: likelihood high / impact medium / level high. Mitigation: Space desks and ventilate between sessions. Owner: Centre head
2. Candidates with fever who must sit: likelihood medium / impact high / level high. Mitigation: Separate room and masks. Owner: Chief invigilator
3. Desks and chairs used in several sessions: likelihood high / impact medium / level high. Mitigation: Wipe between sessions. Owner: Housekeeping
4. Invigilators falling ill: likelihood medium / impact medium / level medium. Mitigation: Backup invigilators. Owner: Exam board
5. Crowded restrooms at breaks: likelihood high / impact medium / level high. Mitigation: Extra cleaning rounds. Owner: Housekeeping

7 Steps to Prepare Test Centres During Flu Outbreaks

1. ULV-fog exam rooms before exam day; areas are usable about 30 minutes later
2. Set up a separate room for candidates with fever or cough
3. Place masks and hand gel at registration
4. Space desks as far as the rules allow
5. Wipe desks and chairs between sessions and ventilate
6. Add restroom cleaning rounds during breaks
7. Ozone-treat exam rooms at day's end with nobody inside, then ventilate

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 should a candidate with fever do? A: Inform the test centre according to the exam board's rules so a separate room can be arranged if available, and wear a mask.

Q: How long before the exam should rooms be fogged? A: It can be done the day before. Areas are typically usable about 30 minutes after ULV fogging.

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 universities or exam boards 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

Malaysia shows flu can strike on students' most important days. Clean test centres let everyone perform at their best. Reduce the risk with the World Health Disinfection disinfection service for exam rooms, corridors and restrooms, and the ozone treatment service for closed air-conditioned exam rooms. To book, call 065-556-6294 or LINE @whd268.

Call 065-556-6294 | LINE: @whd268