Epidemiological characteristics of malaria in China, 2023

doi:10.12140/j.issn.1000-7423.2024.02.001

Abstract

Abstract:

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 characteristics 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 reported, 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-transmission. It is imperative to continuousely strengthen the surveillance and response, find the cases timely and deliver standardized treatment, so as to reduce severe cases and death, preventing local re-transmission.

Key words: Malaria, Epidemiological characteristics, China

CLC Number:

R531.3

ZHANG Li, XIA Zhigui. Epidemiological characteristics of malaria in China, 2023[J]. CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES, 2024, 42(2): 135-139.

Figures/Tables 5

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References 9

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特征 Characteristic	病例诊断分类/例 Diagnostic classification of cases/case					合计 Total
特征 Characteristic	恶性疟 Falciparum malaria	间日疟 Vivax malaria	卵形疟 Ovale malaria	三日疟 Malariae malaria	混合感染 Mixed-infection	合计 Total
国籍 Nationality
中国籍 Chinese	1 463	540	233	65	12	2 313
外国籍 Foreigner	98	75	1	1	0	175
感染来源 Infection source
境外输入病例 Imported case	1 561	615	234	65	12	2 487
输血感染病例 Blood transfusion-induced case	0	0	0	1	0	1
合计 Total	1 561	615	234	66	12	2 488

洲 Continent	国家/个 Country	病例诊断分类/例 Diagnostic classification of cases/case					合计 Total
洲 Continent	国家/个 Country	恶性疟 Falciparum malaria	间日疟 Vivax malaria	卵形疟 Ovale malaria	三日疟 Malariae malaria	混合感染 Mixed-infection	合计 Total
非洲 Africa	42	1 547	165	229	63	12	2 016
亚洲 Asia	9	8	429	4	2	0	443
大洋洲 Oceania	3	6	20	1	0	0	27
北美洲 North America	1	0	1	0	0	0	1
合计 Total	55	1 561	615	234	65	12	2 487

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