Incidence analysis of malaria in Shanxi, 2014–2018

ObjectiveTo understand the epidemiological characteristics of imported malaria in Shanxi province, evaluate the sensitivity of the malaria surveillance system, and provide a scientific basis for the development of scientific and effective strategies and measures to prevent the spread of malaria, prevent or reduce malaria incifence and death.

MethodsThe incidence data of imported malaria in Shanxi from 2014 to 2018 were analyzed. The blood samples were collected from the cases for blood film test of plasmodium.

ResultsA total of 75 cases of malaria were reported, all of them were imported cases. There were 53 cases of falciparum malaria, 13 cases of vivax malaria, 5 cases of ovale malaria, 2 cases of quartan malaria and 2 cases of mixed infection. Most cases were males (94.67%, 71/75), and the cases aged 21–50 years accounted for 85.33% (64/75). The cases were mainly workers and farmers (54.67%, 41/75). Imported cases were reported all the year round, and there was no obvious incidence peak. The imported cases were mainly from Africa, accounting for 90.67%. The median intervals between onset and hospital visit and between hospital visit and diagnosis were 3 d and 2 d, respectively.

ConclusionIn the past five years, malaria cases reported in Shanxi were all imported ones. Strengthening malaria surveillance in returnees from Africa and Southeast Asia, and timely detection and treatment of imported cases are critical for the implementation of malaria elimination in Shanxi.