First Observations of Plasmodium Malariae and Its Evolution During the Parasitological Evaluation of the Long-term Village Scale Malaria Vector Control Program in the Balombo Area of Angola Sylvie Manguin (
[email protected] ) IRD: Institut de recherche pour le developpement https://orcid.org/0000-0002-5925-7164 Vincent Foumane Organization of cooperation and coordination (OCEAC) Jean-Claude Toto Organization of cooperation and coordination (OCEAC) Franck Martinaud Sonamet Company Maria Adelaide Dos Santos Sonamet Company Pierre Carnevale IRD: Institut de recherche pour le developpement Research Keywords: Cross sectional malaria surveys, vector control, Plasmodium malariae, mixed infections Posted Date: August 30th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-829427/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Page 1/19 Abstract Background: A long-term village scale vector control program was implemented in eight villages around the Balombo town (Benguela Province, Angola) to compare the ecacy of four methods of vector control inside houses including long-lasting deltamethrin insecticide treated nets (PermaNet© 2.0 model or P.2.0); association of P.2.0 and deltamethrin Insecticide Treated Plastic Sheeting (ITPS)-Zero Fly© model; deltamethrin ITPS-Wall Lining model alone; and 2 rounds of lambdacyhalothrin Inside Residual Spraying followed by installation of ITPS. Methods: Cross sectional parasitological surveys (CSS) were done every two months. Thick blood lms (TBF) were microscopically examined at the Medical Department of the Angolese Sonamet company in Lobito and a sample of them were double-checked in Yaoundé. Plasmodium species determination, parasitaemia and gametocytes presence, and evolution in time were analyzed.