Epidemiological characteristics of malaria in China,2023
The individual malaria case investigation forms in 31 provinces/municipalities/autonomous regions(excluding Taiwan,Hong Kong and Macao)and Xinjiang Production and Construction Corps of China in 2023 were collected and sorted from"The Information System for Infectious Disease Surveillance".The epidemiological characteris-tics were analyzed.In 2023,2 488 malaria cases were reported,showing an increase of 194.4％compared to 2022(845).Among them,there were 2 487 imported cases,1 case of blood transfusion infection;1 561 falciparum malaria cases(62.7％,1 561/2 488),615 vivax malaria(24.7％,615/2 488),234 ovale malaria(9.4％,234/2 488),66 malariae malaria(2.7％,66/2 488)and 12 cases with mixed-infection(0.5％,12/2 488).In the reported,2 313 cases were of Chinese nationality(93.0％,2 313/2 488)and 175 cases foreign nationality(7.0％,175/2 488);the male-to-female ratio was 11.6:1;the highest number of cases(29.1％,725/2 488)was seen at the age group of 30-39 years showed.The malaria cases were reported from all the 31 provinces/municipalities/autonomous regions and Xinjiang Production and Construction Corps,with the top 5 provinces of Yunnan(398 cases),Henan(234 cases),Guangxi(195 cases),Shandong(178 cases)and Guangdong(174 cases)accumulately,a total of 1 179 cases(47.4％,1 179/2 488)reported.Of the re-ported,85 were severe cases(3.4％,85/2 488)and 12 deaths(0.5％,12/2 488).Although no local transmitted primary malaria cases have been reported in China for seven consecutive years,the risk of imported cases and re-transmis-sion.It is imperative to continuousely strengthen the surveillance and response,find the cases timely and deliver stan-dardized treatment,so as to reduce severe cases and death,preventing local re-transmission.
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