title: Clinical features of malaria in Orang Asli population in Pos Piah, Malaysia.
abstract: A malaria survey was conducted to examine the presence of common clinical features of malaria in individuals living in an endemic area of malaria. The overall infection rate was 11.0% with 7.5% and 3.5% infected with Plasmodium vivax and Plasmodium falciparum respectively. The mean parasitaemia level of both species was 2905.9 parasites/microliter blood, with the mean parasitaemia level of P. vivax and P. falciparum at 682.7 parasites/microliter blood and 6981.7 parasites/microliter blood respectively. The infection rates were higher in the younger age group. Hepatomegaly, hepatosplenomegaly and clinical anaemia were significantly associated with malaria. None of the patients were febrile. In conclusion, in low endemic areas, the presence of clinical anaemia, hepatomegaly and hepatosplenomegaly in afebrile individuals could be considered as useful criteria for the presence of asymptomatic parasitaemia. It is important to carry out laboratory diagnostic investigations, to ensure all the asymptomatic parasitaemia which act as reservoirs are detected and treated.
authors.affiliation: Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur.
authors.forename: M
authors.initials: M
authors.lastname: Norhayati
authors.forename: A K
authors.initials: AK
authors.lastname: Rohani
authors.forename: M I
authors.initials: MI
authors.lastname: Hayati
authors.forename: A S
authors.initials: AS
authors.lastname: Halimah
authors.forename: M Y
authors.initials: MY
authors.lastname: Sharom
authors.forename: A H
authors.initials: AH
authors.lastname: Abidin
authors.forename: M S
authors.initials: MS
authors.lastname: Fatmah
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D006306:Health Surveys; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D008288:Malaria / Q000150:complications / Q000453:epidemiology* / Q000469:parasitology; D008296:Malaysia / Q000453:epidemiology; D018512:Parasitemia / Q000469:parasitology; D015995:Prevalence; D017678:Sex Distribution