دورية أكاديمية
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The need for larval source management accompanying urban development projects in malaria endemic areas: a case study on Bioko Island.

التفاصيل البيبلوغرافية
العنوان: The need for larval source management accompanying urban development projects in malaria endemic areas: a case study on Bioko Island.
المؤلفون: García GA; MCD Global Health, Bioko Island Malaria Elimination Project, Silver Spring, MD, USA. ggarcia@mcd.org., Fuseini G; MCD Global Health, Bioko Island Malaria Elimination Project, Bioko Island, Equatorial Guinea., Donfack OT; MCD Global Health, Bioko Island Malaria Elimination Project, Bioko Island, Equatorial Guinea., Wofford RN; Department of Global and Community Health, George Mason University, Fairfax, VA, USA., Nlang JAM; MCD Global Health, Bioko Island Malaria Elimination Project, Bioko Island, Equatorial Guinea., Efiri PB; MCD Global Health, Bioko Island Malaria Elimination Project, Bioko Island, Equatorial Guinea., Maye VON; MCD Global Health, Bioko Island Malaria Elimination Project, Bioko Island, Equatorial Guinea., Weppelmann TA; Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA., Galick D; MCD Global Health, Bioko Island Malaria Elimination Project, Bioko Island, Equatorial Guinea., Phiri WP; MCD Global Health, Bioko Island Malaria Elimination Project, Bioko Island, Equatorial Guinea., DeBoer K; MCD Global Health, Bioko Island Malaria Elimination Project, Silver Spring, MD, USA., Smith JM; MCD Global Health, Bioko Island Malaria Elimination Project, Silver Spring, MD, USA., Eyono JNM; MCD Global Health, Bioko Island Malaria Elimination Project, Bioko Island, Equatorial Guinea., Rivas MR; Ministry of Health and Social Welfare of Equatorial Guinea, National Malaria Control Programme, Malabo, Equatorial Guinea., Guerra CA; MCD Global Health, Bioko Island Malaria Elimination Project, Silver Spring, MD, USA., von Fricken ME; Department of Global and Community Health, George Mason University, Fairfax, VA, USA.
المصدر: Malaria journal [Malar J] 2022 Nov 14; Vol. 21 (1), pp. 328. Date of Electronic Publication: 2022 Nov 14.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: BioMed Central Country of Publication: England NLM ID: 101139802 Publication Model: Electronic Cited Medium: Internet ISSN: 1475-2875 (Electronic) Linking ISSN: 14752875 NLM ISO Abbreviation: Malar J Subsets: MEDLINE
أسماء مطبوعة: Original Publication: London : BioMed Central, [2002-
مواضيع طبية MeSH: Anopheles*/physiology , Malaria*/epidemiology , Bacillus thuringiensis*, Animals ; Humans ; Mosquito Control/methods ; Larva ; Urban Renewal ; Mosquito Vectors ; Pupa ; Ecosystem
مستخلص: Background: In 2017, several new housing districts were constructed on Bioko Island, Equatorial Guinea. This case study assessed the impact construction projects had on mosquito larval habitats and the effectiveness of larval source management in reducing malaria vector density within the surrounding area.
Methods: Anopheline larval presence was assessed at 11 new construction sites by the proportion of larval habitats containing Anopheline pupae and late instar larval stages. Bacillus thuringiensis israelensis (Bti) larvicide was applied weekly to nine locations for 30 weeks, while two locations received no larvicide and acted as controls. Adult mosquito density was monitored via human landing collections in adjacent communities of six construction sites, including the two control sites.
Results: The sites that received Bti had significantly lower observation rates of both pupae (3.2% vs. 18.0%; p < 0.001) and late instar Anopheles spp. mosquitoes (14.1 vs. 43.6%; p < 0.001) compared to the two untreated sites. Anopheles spp. accounted for 67% of mosquitoes collected with human landing collections and were captured at significantly lower levels in communities adjacent to treated construction sites compared to untreated sites (p < 0.001), with an estimated 38% reduction in human biting rate (IRR: 0.62, 95% CI IRR: 0.55, 0.69). Seven months after the start of the study, untreated sites were treated due to ethical concerns given results from treatment sties, necessitating immediate Bti application. The following week, the number of habitats, the proportion of larval sites with Anopheles spp. pupae, late instars, and adult biting rates in adjacent communities to these sites all decreased to comparable levels across all sites.
Conclusion: Findings suggest larval source management represents an effective intervention to suppress mosquito populations during infrastructure development. Incorporating larval source management into ongoing and planned construction initiatives represents an opportunity to fine tune vector control in response to anthropogenetic changes. Ideally, this should become standard practice in malaria-endemic regions in order to reduce viable mosquito habitats that are common by-products of construction.
(© 2022. The Author(s).)
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فهرسة مساهمة: Keywords: Anopheles; Construction; Larval habitats; Larval source management; Malaria
تواريخ الأحداث: Date Created: 20221115 Date Completed: 20221116 Latest Revision: 20221118
رمز التحديث: 20221213
مُعرف محوري في PubMed: PMC9664620
DOI: 10.1186/s12936-022-04362-9
PMID: 36376966
قاعدة البيانات: MEDLINE
الوصف
تدمد:1475-2875
DOI:10.1186/s12936-022-04362-9