Naturally acquired Plasmodium knowlesi malaria in human, Thailand

Emerg Infect Dis. 2004 Dec;10(12):2211-3. doi: 10.3201/eid1012.040293.


We describe a case of naturally acquired infection with Plasmodium knowlesi in Thailand. Diagnosis was confirmed by the small subunit ribosomal RNA and the mitochondrial cytochrome b sequences. The occurrence of simian malaria in human has signified the roles of wild primate populations in disease transmission in some malaria-endemic areas.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Animals
  • Humans
  • Malaria / diagnosis*
  • Malaria / parasitology
  • Male
  • Phylogeny
  • Plasmodium knowlesi / genetics
  • Plasmodium knowlesi / isolation & purification*
  • RNA, Protozoan / analysis
  • Thailand / epidemiology


  • RNA, Protozoan