J. Voorham et al., REAPPEARANCE OF PLASMODIUM-MALARIAE IN SURINAM, Transactions of the Royal Society of Tropical Medicine and Hygiene, 87(3), 1993, pp. 243-244
Citations number
13
Categorie Soggetti
Public, Environmental & Occupation Heath","Tropical Medicine
Plasmodium malariae has not been reported from Suriname since 1979. In
1989 an increasing number of P. vivax infections among Bush-negroes r
eturning from the eastern part of the interior was reported in Paramar
ibo. A miroscopical re-examination of all malaria cases in the eastern
part of the country failed to confirm any P. vivax infections, but in
stead P. malariae infections were diagnosed. A study followed to deter
mine the Duffy blood group antigens of 4 Bush-negroes allegedly with a
P. vivax infection in their medical history and of 28 and.32 unselect
ed Bush-negroes and Amerindians respectively. Three of the 4 former Bu
sh-negroes had the Fy(B) antigen, while only 7% of the unselected Bush
-negroes had this antigen. This low frequency of the genotype is incom
patible with reports of high P. vivax prevalences in Bush-negro popula
tions. The Amerindians tested showed a low proportion of Fy0 genotype,
which is compatible with the frequent diagnosis of P. vivax among thi
s ethnic group. Reports of P. vivax infections among Bush-negroes are
due to misdiagnosis of P. malariae, emphasizing the need to include al
l 4 species of human Plasmodium when (re)training microscopists. The q
uestion whether P. malariae reappeared in Suriname due to increased co
ntact with the simian reservoir, or was simply missed, is discussed.