The True Story: Mongolia Steps Up Flu Measures

Mongolia Weekly reported on 8 December 2025 that Mongolia faced a severe flu outbreak. Cases rose 32.5%, with about 279,000 clinic visits. Children under 15 made up 82.6% of cases, and children aged 0 to 5 made up 63.2% of severe respiratory hospitalisations. The main strain was H3N2.

The government added 1,138 beds, moved grades 1 to 5 online from 1 December, asked for New Year parties to be cancelled and allowed pregnant staff and parents of young children to work remotely.

The Key Lesson: Gatherings at the Peak Need Careful Thought

In Thailand, December and January bring company New Year parties, lucky draws and countdowns in closed banquet halls with hundreds of people.

• Assess the situation before the event, following Department of Disease Control updates
• Let sick staff skip the party without losing their prize draw
• Reduce crowding with split sessions or open venues
• Buffets and shared microphones are key touch points
• Protect at-risk staff such as pregnant staff and those with chronic illness

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 Year-End Parties and Corporate Events

1. Post-party outbreak with mass sick leave: likelihood medium / impact high / level high. Mitigation: Door screening; sick staff stay away. Owner: HR
2. Crowded closed banquet rooms: likelihood high / impact high / level critical. Mitigation: Cap numbers, ventilate and fog before the event. Owner: Event organiser
3. Shared buffets and microphones: likelihood high / impact medium / level high. Mitigation: Served food and wiped microphones. Owner: Catering
4. At-risk staff infected: likelihood medium / impact medium / level medium. Mitigation: Online attendance option. Owner: Line managers
5. Crowded staff shuttles: likelihood medium / impact medium / level medium. Mitigation: Ozone-treat buses before and after. Owner: Admin

7 Steps to Hold a Safe New Year Party in Flu Season

1. Check the situation 1-2 weeks ahead with a plan to postpone or scale down
2. Announce that sick staff should stay home while keeping their lucky-draw entry
3. Fog the banquet room before the event: tables, chairs and stage
4. Have catering staff serve food instead of self-service buffets
5. Wipe microphones between users and put hand gel on every table
6. Ozone-treat staff shuttles before and after
7. Offer an online option for at-risk staff

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 a banquet room be fogged before the event? A: Yes. Areas are typically usable about 30 minutes after fogging, so it can be done on the day.

Q: How long does van ozone treatment take? A: It depends on the vehicle; no one may be inside during treatment, and it must be ventilated afterwards.

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 a company get a tax invoice with withholding tax? 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

Mongolia called off New Year parties during a severe outbreak. Event organisers in Thailand should have a safe plan ready. Reduce the risk with the World Health Disinfection disinfection service for banquet rooms, stages and dining tables, and the ozone treatment service for staff shuttles and performers' rooms. To book, call 065-556-6294 or LINE @whd268.

Call 065-556-6294 | LINE: @whd268