The True Story: The Patient Handled Sick and Dead Chickens

On 28 September 2026, Cambodia's Ministry of Health announced the country's sixth human H5N1 case of 2026, a 49-year-old man in Tuol Kruos village, Trapeang Prasat district, Oddar Meanchey province, in the north-west, confirmed by the National Institute of Public Health and the Pasteur Institute in Cambodia.

He raised chickens and had direct contact with sick and dead birds; authorities had confirmed the farm's poultry was infected with H5N1 on 23 September. He was isolated and in intensive care, close contacts received oseltamivir, and the ministry urged people not to handle or eat sick or dead poultry.

The Key Lesson: Sick or Dead Poultry Is a Danger Signal That Needs Action at Once

Thai poultry farms, egg farms and slaughterhouses have workers handling birds every day. Points to watch are:

• Sick or unusually dead birds handled without protection
• Workers' boots and clothes that carry the virus off the farm
• Transport vehicles moving between farms
• Cages and equipment that are shared
• Worker housing next to the sheds

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 Poultry Farms and Slaughterhouses

1. Workers handle dead birds without protection: likelihood medium / impact high / level high. Mitigation: gloves, masks and boots, and report to livestock officers at once. Owner: farm manager
2. Unusual deaths not reported: likelihood medium / impact high / level high. Mitigation: procedure to report to the livestock department and halt movements. Owner: farm owner
3. Vehicles not disinfected before entry: likelihood high / impact medium / level high. Mitigation: wheel and vehicle spray station at the gate. Owner: biosecurity lead
4. Workers' boots and clothes not separated: likelihood high / impact medium / level high. Mitigation: footbaths and dedicated shed clothing. Owner: farm manager
5. Sheds not disinfected between batches: likelihood medium / impact high / level high. Mitigation: wash and fog sheds after every depopulation. Owner: farm manager

Ways to Reduce Bird Flu Risk on Poultry Farms

1. Wear protective gear whenever handling birds
2. Report to the livestock department when birds die unusually
3. Disinfect vehicles at the farm gate
4. Use footbaths and dedicated clothing in sheds
5. Never eat sick or dead poultry under any circumstances
6. Wash and fog sheds between batches
7. Ozone-treat worker housing and offices 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: How was Cambodia's sixth bird flu patient infected? A: He raised chickens and had direct contact with sick and dead birds; the farm's poultry had confirmed H5N1.

Q: Does bird flu spread between people? A: Most patients catch it from direct contact with sick poultry. Avoid handling or eating sick or dead birds and always cook poultry thoroughly.

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 farms or companies 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 Cambodia shows bird flu is close to the Thai border. Farms with strict biosecurity protect workers, output and communities alike. Reduce the risk with the World Health Disinfection disinfection service for poultry sheds, farm gates and slaughterhouses, and the ozone treatment service for worker housing and farm offices. To book, call 065-556-6294 or LINE @whd268.

Call 065-556-6294 | LINE: @whd268