Last updated: 15 Nov 2026 | 5 Views |
KERA News reported Dallas County Health and Human Services offering free TB testing at MacArthur High School for students enrolled in 2025 to 2026, after an exposure under investigation. What should Thai schools prepare?
KERA News reported on 17 August 2026 that Dallas County would offer free TB testing at MacArthur High School from 24 August for students enrolled in 2025 to 2026.
The exposure occurred in Irving the previous year and was under investigation by the county and Texas DSHS; officials said risk to the general public remained low.
Bringing testing teams to school lets hundreds of students be screened without parents missing work. Thai schools can partner with sub-district health promoting hospitals or district offices to set up screening; medical treatment is the main measure, with well-ventilated, regularly cleaned testing rooms and classrooms.

Highlights: UK disinfectant that meets EN 14476 and is trusted by NHS England according to the product page, available for foggers and as a spray
Best for: Use with ULV foggers in hospitals, clinics, hotels and offices
Why it ranks here: Wipes screening tables, waiting chairs and equipment
See product and price - click here
Highlights: German Airofog brand, 15-30 micron droplets, 5 L tank, only 3.1 kg for easy handheld use
Best for: Small to medium rooms, clinics, homes, guest rooms and vans
Why it ranks here: Fogs rooms used for screening after the event
See product and price - click here
Highlights: 30 wipes per pack, easy to carry for instant wiping of touch points
Best for: Wiping handles, desks and phones during the day
Why it ranks here: Use after soap handwashing
See product and price - click here
Highlights: German Airofog brand, 800 W motor, 15-30 micron droplets, 5 L tank, works with water-based disinfectants
Best for: Indoor fogging of medium to large buildings such as offices, schools and hospitals
See product and price - click here
Highlights: Uses steam above 100°C with no chemicals, ideal for fabrics and crevices sprays cannot reach
Best for: Mattresses, sofas, curtains, hotel beds and bedbug treatment
See product and price - click here
Highlights: Longray 2680A-II, 800 W motor, 6 L tank, adjustable 5-50 micron droplets, about 5 kg according to supplier data
Best for: Shops, classrooms, guest rooms and daily fogging
See product and price - click here
Highlights: 4.1 hp engine, 12 L chemical tank, reach up to 12 m, droplets under 30 microns
Best for: Large outdoor areas, warehouses, factories, farms and markets
See product and price - click here
CHEMGENE brand illustration
Highlights: From the same family as HLD4H, recommended by WHD for homes, kindergartens and childcare centres according to its website
Best for: Homes, childcare centres, kindergartens and offices
See product and price - click here
Highlights: 50 L tank, mist reach up to 10 m, adjustable output
Best for: Communities, villages, estates and medium farms
See product and price - click here
Highlights: 18 hp engine, 75 L tank, mist reach up to 10 m
Best for: Large areas such as municipalities, industrial estates and big farms
See product and price - click here| Rank | Product | Type | Best for |
|---|---|---|---|
| 1 | CHEMGENE HLD4H | High-level medical-grade disinfectant | Use with ULV foggers in hospitals, clinics, hotels and offices |
| 2 | AIROFOG U240 | Lightweight electric ULV fogger | Small to medium rooms, clinics, homes, guest rooms and vans |
| 3 | WELLGIENIC | Disinfecting wet wipes | Wiping handles, desks and phones during the day |
| 4 | AIROFOG U260 | Electric ULV fogger | Indoor fogging of medium to large buildings such as offices, schools and hospitals |
| 5 | STEMAR | Disinfecting steam cleaner | Mattresses, sofas, curtains, hotel beds and bedbug treatment |
| 6 | ULV 2680A | Value electric ULV fogger | Shops, classrooms, guest rooms and daily fogging |
| 7 | SOLO PORT 423 | Backpack mist blower | Large outdoor areas, warehouses, factories, farms and markets |
| 8 | CHEMGENE HLD4L | Disinfectant for homes and children's areas | Homes, childcare centres, kindergartens and offices |
| 9 | AIROFOG UM2 | Truck-mounted fogger, 2 nozzles | Communities, villages, estates and medium farms |
| 10 | AIROFOG UM4 | Truck-mounted fogger, 4 nozzles | Large areas such as municipalities, industrial estates and big farms |
Before: Families were told to test on their own and many never did.
After: On-campus testing, advance notice and result follow-up.
If buying equipment is not practical or the area is too large, use the World Health Disinfection disinfection service or ozone treatment service. The team wears full protective equipment, chooses products to suit the germ and surface, and reports after the job.
Q: Who needs TB testing after a school case? A: Health officials define at-risk groups by exposure; in Dallas, students enrolled in the exposure year.
Q: How long before the area can be used? A: After ULV fogging, areas are typically usable about 30 minutes later. For ozone treatment, no people or pets may be inside and the room must be ventilated before use.
Q: Can I get a tax invoice? A: Yes. Tax invoices are issued and 3% withholding tax is supported. Call 065-556-6294 or LINE @whd268.
Follow disease updates from Thailand's Department of Disease Control (hotline 1422) and the World Health Organization. Disinfection reduces germs in the environment and is not medical treatment; anyone with symptoms should see a doctor.
Dallas shows on-campus testing reaches many students. Schools working with health officials protect the community.
Keywords: tuberculosis, free TB test, high school, public health, ChemgeneHLD4H, germ elimination service