Officials said that the number of cases and the number of fatalities are both 4 times higher than the same period last year.
The ministry's data shows that cases were reported in all provinces of Thailand.
A war room is now in place to monitor the situation and devise measures to contain the disease. The ministry fears the situation would worsen during the rainy season.
In its 2-mth lifecycle, a female yellow fever mosquito, which is the cause of dengue fever, can lay 500 eggs.