[Epidemiological analysis of imported malaria in Henan Province in 2011]

To analyze the epidemiological characteristics of imported malaria in Henan Province in 2011, and provide scientific basis for the control of imported malaria.

Data of imported malaria were collected and analyzed by SPSS11.5 in 2011.

145 imported malaria cases were reported. Among them, 110 (75.9%) were falciparum malaria, 31 (21.4%) were vivax malaria, 3 (2.1%) were quartan malaria, and 1 (0.7%) was ovale malaria. The ratio of males to females was 47.3:1 (142/3). The average age was (37.7 +/- 9.4) years old. 113 patients returned from Africa, accounted for 77.9% of the total. The main reason for going abroad among the cases was labor export (82.8%, 120/145). The cases were reported every month. The median interval from symptom appearing to diagnosis was 4 d, only 19 patients (13.1%) were diagnosed within 24 h. Eighty-six cases (63.2%) were reported by municipal medical units and CDC. Forty cases (29.4%) were reported by county level medical units and CDC. A total of 143 cases recovered with chemotherapy and two cases died.

In order to avoid the death of malaria cases and reduce the risk of secondary transmission, malaria screening and health education for those returned from malaria-endemic areas should be strengthened and the diagnosis and treatment capabilities be improved at county medical units.