There was no death case, said Public Health Minister Pradit Sintawanarong.
Seventy four per cent were children aged below 3 years.
He said that by number, the situation is not worse than last year's. However, the number of patients rose 1-2 months prematurely due to more rain and high humidity.
Enterovirus that causes the infection grows well in cool-damp weather and confined space. As such, children at kindergartens and nurseries are prone to the infection.