title: Epidemiology of malaria in New Halfa, an irrigated area in eastern Sudan.
abstract: A prospective study investigated the epidemiology of malaria in an agricultural area in eastern Sudan from November 1999 to June 2000 (1 irrigation and 1 dry season). In monthly parasite surveys, 99/ 1539 blood films from 190 individuals were positive for malaria: 95% for Plasmodium falciparum, 3% P. vivax and 2% P. ovale. The slide positive rate (SPR) of malaria episodes ranged from 3.7% to 12.8% in different months of the survey, with a peak in January. There was no significant difference in SPR between irrigation and dry seasons (7.2% versus 5.1%). SPR differed significantly by age group and was highest in under 5-year-olds. However, there was no significant difference in SPR between males and females. Transmission and intensity of malaria in this area is perennial and moderate rather than low.
authors.affiliation: University of Kassala, Kassala, Sudan.
authors.forename: Y El-S
authors.initials: YE
authors.lastname: Himeidan
authors.forename: M I
authors.initials: MI
authors.lastname: Elbashir
authors.forename: El-A
authors.initials: el-A
authors.lastname: El-Rayah
authors.forename: I
authors.initials: I
authors.lastname: Adam
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000383:Agriculture; D000962:Antimalarials; D002648:Child; D002675:Child, Preschool; D002738:Chloroquine; D003889:Desert Climate; D004351:Drug Resistance; D005618:Fresh Water / Q000469:parasitology*; D006801:Humans; D007223:Infant; D008288:Malaria / Q000453:epidemiology* / Q000469:parasitology / Q000517:prevention & control / Q000635:transmission; D016778:Malaria, Falciparum / Q000453:epidemiology* / Q000469:parasitology / Q000517:prevention & control / Q000635:transmission; D016780:Malaria, Vivax / Q000453:epidemiology* / Q000469:parasitology / Q000517:prevention & control / Q000635:transmission; D009017:Morbidity; D041122:Plasmodium ovale; D011159:Population Surveillance; D011446:Prospective Studies; D012307:Risk Factors; D012423:Rural Health / Q000706:statistics & numerical data; D012621:Seasons; D017678:Sex Distribution; D012959:Socioeconomic Factors; D013397:Sudan / Q000453:epidemiology; D011795:Surveys and Questionnaires
chemical_list: D000962:Antimalarials; D002738:Chloroquine