Dengue fever has been diagnosed in four provinces in the Northeast this year, involving 488 people in total, the Office of Disease Prevention and Control in Nakhon Ratchasima reports.
No one has died thus far.
From January 1 to June 5, there were 233 cases in Nakhon Ratchasima, 135 in Surin, 64 in Chaiyaphum and 56 in Buri Ram.
Officials on Wednesday visited homes in Tambon Kud Jok in Nakhon Ratchasima’s Bua Yai district where about 10 cases originated.
They found many open water containers in the area, affording Aedes aegypti mosquitos ample places to lay eggs.
Residents were advised to empty the containers or cover them with lids.
Officials also sprayed the area with insecticide.