A City Fights a Rainy-Season Dengue Outbreak: 45 Communities Sprayed, Controlled in 2 Weeks with SOLO PORT423

In August, with daily rain, Dr. Supawadee, head of the municipal public health and environment division of a northeastern city, opened the weekly surveillance report and froze. Dengue cases had jumped from 12 to 68 in a single month across 45 communities, with 9 hospitalized children and the first severe DHF case of the year.

The mayor ordered an emergency meeting: "Within two weeks the numbers must fall, or we lose lives and public trust." The mission fell to the public health division and the municipal spray team.

Why Urban Dengue Is the Hardest to Control

• Breeding sites everywhere — pots, saucers, old tires, tanks, clogged drains; thousands of hidden spots in dense communities.
• Mosquitoes spread house to house — dense housing accelerates transmission.
• Three diseases from one mosquito — dengue, Zika and chikungunya; pregnant women risk Zika harming the fetus.
• Social-media pressure — residents demand fogging; delays bring criticism.
• Repeat rounds needed — adult-mosquito spraying must repeat every 7 days to break the cycle.

Problems with the Old Equipment

The city had three shoulder thermal foggers, six years old. Two of three started poorly and stalled when hot, needing frequent repairs; thick smoke worsened road visibility and drew complaints; small tanks meant constant refilling; and with 45 communities to cover in two weeks, the available capacity simply was not enough. Cases kept climbing.

The Solution: Reinforce with SOLO PORT423 ULV Backpack Mist Blower

The division proposed purchasing the SOLO PORT423 ULV backpack mist blower as core equipment, because its fine ULV droplets suit urban adult-mosquito control per Department of Disease Control guidelines. The team zoned morning and evening spraying and covered all 45 communities in 12 days.

10 Reasons the City Chose SOLO PORT423

1. Made in Germany, MAHLE and BING parts for heavy municipal use.
2. VMD below 30 microns, matching ULV dengue-control guidelines.
3. 12-meter reach; airflow 1,400 m³/h.
4. 12-liter tank for fewer refills.
5. 2-stroke 4.1 hp engine, easy start, heat-tolerant.
6. Only 11 kg for all-soi walking.
7. Controlled mist, not thick smoke — better visibility, fewer complaints.
8. Saves chemical across the rainy season.
9. Both mosquito control and disinfection.
10. Cost-effective multi-year asset, less outsourcing.

Before / After

Before: 68 dengue cases a month, old foggers failing, missed rounds, daily online complaints.

After: all 45 communities sprayed in 12 days, a second round 7 days later, new cases down to 9 the next month, no deaths. The mayor reported results to the council and residents praised the rapid response.

"With reliable equipment, the team sprayed fast and thoroughly and the numbers fell. Every municipality should have this." — Public Health Division Director

Specs

2-stroke 72.3cc, 3 kW / 4.1 hp • 12 L tank • 1.4 L fuel • VMD under 30 microns • 12 m range • airflow 1,400 m³/h • 11 kg • BING carburetor.

Call 065-556-6294 | LINE: @whd268

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