Dengue fluctuates every year depending on measures taken to avoid an outbreak, said Wichai Satimai, director of Thailand’s bureau of vector-borne diseases. “If we can reduce the number of breeding places, then we can reduce the transmissions,” he said, noting that northern Nong Khai Province has not reported a dengue case for seven years.
A quarter of the cases come from the Thailand-Malaysia border area, Wichai said. Infected travellers – with symptoms so mild they are unaware they are ill – unknowingly spread the disease.
Francois Nosten, director of the Shoklo Malaria Research Unit in Mae Sot, a town near the Myanmar border, said cases had not increased in the western border regions of Thailand, an area prone to outbreaks.
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