A total of 3,301 new cases of dengue fever were reported nationwide during the past week, the Disease Control Department chief said on Friday.
Dr Suwannachai Watanayingcharoenchai said during the infection, the number of people infected with dengue was an average of 10,000 patients a month during the rainy season from June to September.
From January 1 to August 7, there were 41,094 cases of dengue and 48 patients died, the director general said.
He said in May the number of cases was 7,020 but it increased to 13,233 in June and 10,812 in July.
Suwannachai explained that rainwater caused the areas where mosquitoes can breed to increase so the infection rate rose.