The True Story: Over Half of Ukraine's Weekly Cases Are Children

Ukrinform reported on 10 February 2026, citing Ukraine's Center for Public Health, that from 2 to 8 February there were 160,255 acute respiratory infections, up 13.6%, including 82,203 children under 17, about 51%.

There were 5,660 hospitalisations, 3,115 of them children. Kyiv, Poltava and Khmelnytskyi regions were at a medium level, and several more regions exceeded the low epidemic threshold.

The Key Lesson: Pupils From Many Schools in One Room

Tutoring centres in Thailand gather children from many schools in closed air-conditioned rooms, in the evenings and at weekends, with several sessions a day.

• One room hosts many sessions a day, so ventilate between sessions
• Sick children often attend so as not to miss lessons; offer recordings
• Desks, chairs and tutors' microphones are shared touch points
• Pre-exam periods are busiest, so prepare beforehand
• A sick tutor affects a whole course, so have an online backup

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 Tutoring Centres

1. Sick children attending and spreading flu in closed rooms: likelihood high / impact high / level critical. Mitigation: Recordings for sick pupils and classroom fogging. Owner: Centre owner
2. Rooms used for many back-to-back sessions: likelihood high / impact medium / level high. Mitigation: Ventilation breaks and desk wiping between sessions. Owner: Branch manager
3. Tutor falls ill: likelihood medium / impact high / level high. Mitigation: Online backup teaching and vaccination. Owner: Academic office
4. Stuffy rooms at exam time: likelihood medium / impact medium / level medium. Mitigation: Ozone-treat rooms after the last session. Owner: Facilities
5. Worried parents: likelihood low / impact medium / level low. Mitigation: Share measures in parent LINE groups. Owner: Communications

7 Steps to Prevent Flu in Tutoring Centres

1. Provide recordings so sick children can learn from home
2. Screen at the door: check temperature and give masks to coughing pupils
3. Leave 10-15 minutes between sessions with doors open
4. Wipe desks, chairs and microphones between sessions
5. Fog every classroom weekly in flu season and before exam courses
6. Ozone-treat classrooms after the last session of the day
7. Inform parents of measures and the sick-pupil policy

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: When can classes resume after fogging? A: Typically about 30 minutes later, so fogging can be done before the morning session.

Q: Can classrooms be ozone-treated daily? A: Yes, after the last session when empty, with ventilation before classes the next day.

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 tutoring centre 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

Ukraine shows children are the most affected group, so tutoring centres must take classroom hygiene seriously. Reduce the risk with the World Health Disinfection disinfection service for classrooms, waiting areas and corridors, and the ozone treatment service for closed classrooms after the last session. To book, call 065-556-6294 or LINE @whd268.

Call 065-556-6294 | LINE: @whd268