Transmission Indices of Malaria in Anopheles Mosquitoes in an agrarian community adjourning Osogbo, Southwestern, Nigeria.

IF 0.8 4区医学 Q4 INFECTIOUS DISEASES

Journal of Vector Borne Diseases Pub Date : 2025-02-10 DOI:10.4103/JVBD.JVBD_201_24

Zarat O Iwalewa, Olabanji A Surakat, Mohammed A Rufai, Kamilu A Fasasi, Harun K Aremu, Monsuru A Adeleke

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Abstract

Background objectives: Mosquitoes transmit malaria and other infectious diseases. A thorough understanding of the dynamics, biting behavior, and infectiousness of Anopheles vector, sporozoites is required to calculate transmission indices and develop effective control tactics. The goal of this study was to identify the mosquito species in a rural settlement near the Osogbo city in southern Nigeria, as well as their sources of blood meals and the rate at which sporozoites are formed.

Methods: From June to December 2021, 23 homes in the community were chosen at random to catch adult mosquitos with CDC light traps and Pyrethrum Spray Catches (PSC). Mosquitoes were sorted using morphological criteria, and polymerase chain reaction (PCR) was used to detect the origin of the blood meal, check for the infectivity of sporozoites in the mosquitoes, and calculate the fraction of An. gambiae s.l. collected.

Results: Among the 318 mosquitos collected, 185 (58.18%) were recognized as An. gambiae s.l., 4 (1.26 %) as Aedes aegypti, 104 (32.70 %) as Cx. quequinfasciatus, and 25 (7.86 %) as M. uniformis. The PCR revealed that the specimens of An. gambiae s.l. were 96% An. colluzzi and 4% An. gambiae s.s. The An. colluzzi mosquito species only consumed human blood.

Interpretation conclusion: The presence of sporozoites in none of the An. gambiae s.l. mosquitoes in the area indicates a low rate of malaria transmission. The anthropoliphic nature of the Anopheles species implies a danger of malaria transmission, despite the fact that none of the Anopheles tested positive for sporozoites.

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尼日利亚西南部奥索博附近农业社区按蚊疟疾传播指数

背景目的：蚊子传播疟疾和其他传染病。深入了解按蚊媒介孢子虫的动态、叮咬行为和传染性，计算传播指数和制定有效的控制策略是必要的。这项研究的目的是鉴定尼日利亚南部Osogbo市附近一个农村居民点的蚊子种类，以及它们的血食来源和孢子形成的速度。方法：2021年6月至12月，随机抽取社区23户，采用CDC灯诱和除虫菊喷雾诱蚊器（PSC）进行成蚊捕获。按形态标准对蚊类进行分类，采用聚合酶链反应（PCR）检测血粉来源，检测蚊体孢子体传染性，并计算安。冈比亚s.l.收集。结果：318只蚊中，安氏蚊185只，占58.18%；冈比亚伊蚊4只（1.26%），埃及伊蚊104只（32.70%）；均纹库蚊25只（7.86%）。聚合酶链反应（PCR）结果显示：冈比亚菌96%为安菌。colluzzi和4%的An。冈比亚s.s An。科卢齐蚊子只吸食人血。解释结论：本研究中未发现孢子体。该地区的冈比亚蚊表明疟疾传播率较低。按蚊的嗜人性意味着存在传播疟疾的危险，尽管事实上没有一种按蚊的孢子体检测呈阳性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Vector Borne Diseases INFECTIOUS DISEASES-PARASITOLOGY

CiteScore

0.90

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： National Institute of Malaria Research on behalf of Indian Council of Medical Research (ICMR) publishes the Journal of Vector Borne Diseases. This Journal was earlier published as the Indian Journal of Malariology, a peer reviewed and open access biomedical journal in the field of vector borne diseases. The Journal publishes review articles, original research articles, short research communications, case reports of prime importance, letters to the editor in the field of vector borne diseases and their control.