Last updated: 4 Jun 2026 | 9 Views |
Teacher Nid, 41, directs a sub-district childcare center in Khon Kaen caring for 86 children aged 2–5. On a Monday morning a parent called: 4-year-old Khaohom was hospitalized with dengue. Two more cases followed within ten days — all three from the same classroom.
The parents' LINE group erupted: "How can the center let mosquitoes in?" "Whose child is next?" Within one week, 12 families filed to withdraw their children, and the sub-district chief executive called asking for answers.
Teacher Nid had tried it all — expired abate sand, teachers spraying aerosol cans after class, and a municipal fogging request stuck in a three-week queue. Mosquitoes don't wait.
The committee approved the mosquito spraying service of World Health Disinfection (WHD). A free survey the next day found 9 breeding sites. The team fogged sub-20-micron ULV with WHO-certified Deltamethrin 2.5% on Friday evening after all children went home — by Monday morning everything was dry, odorless, and child-safe.
Before: 3 dengue cases, 12 withdrawal requests, a furious group chat, a stressed-out staff.
After: Zero new cases all term, every withdrawal request cancelled — and a parent posted a photo of the "Professionally treated by WHD" sign with the caption "this center truly cares about our kids."
"The day the third child got sick, I cried in my office. Today parents thank us for acting fast. The trust we nearly lost came back because we chose professionals." — Teacher Nid, Center Director
What about children with sensitive skin? Once fully dry the WHO-standard water-based formula is non-irritating; we recommend wiping mouthing toys before reuse for extra peace of mind.
When is the best time to spray? Friday evenings or term breaks, repeated monthly in the rainy season.
See Our Mosquito Spraying Service — Click Here
Call 065-556-6294 | LINE: @whd268
Related: School Disinfection Service | All Articles | WHO – Dengue
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