STUDY ON THE PREVALENCE OF PLASMODIUM SPECIES IN THREE PROVINCES OF ANGOLA, AND DETERMINATION OF THE PERCENTAGE OF MIXED INFECTIONS, 2019

• DOI: 10.22533/at.ed.1592762225111

• Palavras-chave: P.falciparum, P. vivax, P.malariae, P.ovale, P.knowlesi, Malaria, Prevalence.

• Keywords: P.falciparum, P. vivax, P.malariae, P.ovale, P.knowlesi, Malaria, Prevalence.

• Abstract:

  In Angola, four types of Plasmodium are diagnosed: P.falciparum, P.Vivax, P.Malariae and P.ovale. P.falciparum is predominant in 87% according to previous studies. Still on the basis of some studies, there is a high percentage of mixed infections (10%) by Plasmodium. The diagnosis of malaria in Angola is based on optical microscopy and rapid testing. The main objective of this study is to know the prevalence of Plasmodium species in three provinces of Angola and to determine the percentage of mixed infections.

  The methodology used was that of collecting data on the results of plasmodium research, in children aged 6 to 143 months, screened during efficacy studies in three provinces of Angola. Species determination was obtained by optical microscopy with two independent readings.

  Of the total of 4667 samples collected, 1490 were positive, 1328 (89%) by Pf, 6 (0.4%) by Pv, 67 (4%) by Pm, 14 (1%) by Po and 0 (0% ) by Pk. A total of 75 (5%) samples were mixed infections between Pf+Pv (0.1%), Pf+Pm (3%) and Pf+Po (2%).