A retrospective analysis of malaria epidemiological characteristics in Yingjiang County on the China-Myanmar border

Sci Rep. 2021 Jul 8;11(1):14129. doi: 10.1038/s41598-021-93734-3.

Abstract

Yingjiang County, which is on the China-Myanmar border, is the main focus for malaria elimination in China. The epidemiological characteristics of malaria in Yingjiang County were analysed in a retrospective analysis. A total of 895 malaria cases were reported in Yingjiang County between 2013 and 2019. The majority of cases occurred in males (70.7%) and individuals aged 19-59 years (77.3%). Plasmodium vivax was the predominant species (96.6%). The number of indigenous cases decreased gradually and since 2017, no indigenous cases have been reported. Malaria cases were mainly distributed in the southern and southwestern areas of the county; 55.6% of the indigenous cases were reported in Nabang Township, which also had the highest risk of imported malaria. The "1-3-7" approach has been implemented effectively, with 100% of cases reported within 24 h, 88.9% cases investigated and confirmed within 3 days and 98.5% of foci responded to within 7 days. Although malaria elimination has been achieved in Yingjiang County, sustaining elimination and preventing the re-establishment of malaria require the continued strengthening of case detection, surveillance and response systems targeting the migrant population in border areas.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • China / epidemiology
  • Epidemiologic Studies
  • Female
  • Humans
  • Malaria, Falciparum / epidemiology*
  • Malaria, Falciparum / parasitology
  • Malaria, Vivax / epidemiology*
  • Malaria, Vivax / parasitology
  • Male
  • Middle Aged
  • Myanmar / epidemiology
  • Plasmodium falciparum / pathogenicity*
  • Plasmodium vivax / pathogenicity*
  • Transients and Migrants
  • Young Adult