[Epidemic status of malaria in Zhenjiang City from 2004 to 2017].

OBJECTIVE: To analyze the epidemic situation and epidemiological characteristics of malaria in Zhenjiang City from 2004 to 2017, so as to provide the evidence for formulating the reasonable strategies and measures for malaria prevention and control.

METHODS: The epidemiological data of malaria in Zhenjiang City from 2004 to 2017 were collected and analyzed for the epidemic situation, epidemiological characteristics, species of Plasmodium , blood test status for febrile patients.

RESULTS: A total of 182 malaria cases were reported in Zhenjiang City between 2004 and 2017, 123 cases (67.58%) were infected with P. vivax , and 55 cases (30.22%) were infected with P. falciparum . Among all the reported cases, 41 (22.53%) were local cases, 66 (36.26%) were imported cases from other provinces in China, 75 (41.21%) were imported cases from abroad. Most of the cases were male (133 cases), and 59.89% of them concentrated in the age groups of 20-50 years. These cases were mainly farmers (24.73%, 45/182) and workers (24.18%, 44/182), and most of the cases occurred from July to September. From 2004 to 2017, the blood tests were conducted for 258 879 febrile patients, with a positive detection rate of 0.007% in the local population and 0.724% in floating population, and there was a statistically significant difference between them ( P <0.01).

CONCLUSIONS: Since 2011, no indigenous cases have been reported in Zhenjiang City, and therefore, the control of imported malaria from abroad has become the key of malaria prevention and control in this city.