Molecular epidemiology of non-falciparum Plasmodium infections in three different areas of the Ivory Coast

Malaria Journal

Research

Akpa P. Gnagne¹  Hervé E. I. Menan²  Kpongbo E. Angora²  Estelle G. M. Kone²  Kondo F. Kassi²  Abo H. Bosson-Vanga²  Vincent Djohan²  William Yavo³  Akoua V. Bedia-Tanoh³  Pulchérie C. M. Kiki-Barro³  Abibatou A. Konate-Toure³  Assohoun J. S. Miezan³ 

[1] National Institute of Public Health, B.P. V47, Abidjan, Côte d’Ivoire;UFR of Pharmaceutical and Biological Sciences, Department of Parasitology-Mycology, Félix Houphouët-Boigny University, Abidjan, Côte d’Ivoire;UFR of Pharmaceutical and Biological Sciences, Department of Parasitology-Mycology, Félix Houphouët-Boigny University, Abidjan, Côte d’Ivoire;National Institute of Public Health, B.P. V47, Abidjan, Côte d’Ivoire;

关键词: Plasmodium;    Nested PCR;    Ivory Coast;   

DOI  :  10.1186/s12936-023-04639-7

 received in 2022-12-28, accepted in 2023-07-04,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundMalaria is a major public health problem, particularly in the tropical regions of America, Africa and Asia. Plasmodium falciparum is not only the most widespread but also the most deadly species. The share of Plasmodium infections caused by the other species (Plasmodium ovale and Plasmodium malariae) is clearly underestimated. The objective of the study was to determine the molecular epidemiology of plasmodial infection due to P. malariae and P. ovale in Côte d'Ivoire.MethodsThe study was cross-sectional. The study participants were recruited from Abengourou, San Pedro and Grand-Bassam. Sample collection took place from May 2015 to April 2016. Questionnaires were administered and filter paper blood samples were collected for parasite DNA extraction. The molecular analysis was carried out from February to March 2021. A nested PCR was used for species diagnosis. The data was presented in frequencies and proportions.ResultsA total of 360 patients were recruited, including 179 men (49,7%) for 181 women (50,3%). The overall Plasmodium positive rate was 72.5% (261/360). The specific index was 77.4% and 1.5% for P. falciparum and P. malariae in mono-infection, respectively. There was also 15% P. falciparum and P. malariae co-infection, 3.4% P. falciparum and P. ovale co-infection and 2.3% P. falciparum, P. malariae and P. ovale triple-infection. Typing of P. ovale subspecies showed a significant predominance of P. ovale curtisi (81.2% of cases).ConclusionPlasmodium falciparum remains the most prevalent malaria species in Côte d'Ivoire, but P. malariae and P. ovale are also endemic mostly in co-infection. Malaria elimination requires a better understanding of the specific epidemiological characteristics of P. malariae and P. ovale with a particular emphasis on the identification of asymptomatic carriers.

【 授权许可】

CC BY   
© The Author(s) 2023