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Community Participation in Habitat Management and Larviciding for the Control of Malaria Vectors in Southern Malawi

Gowelo, Steven, Meijer, Paola, Tizifa, Tinashe, Malenga, Tumaini, Mburu, Monicah M., Kabaghe, Alinune N., Terlouw, Anja ORCID:, van Vugt, Michèle, Phiri, Kamija S., Mzilahowa, Themba, Koenraadt, Constantianus J.M., van den Berg, Henk, Manda-Taylor, Lucinda, McCann, Robert S. and Takken, Willem (2022) 'Community Participation in Habitat Management and Larviciding for the Control of Malaria Vectors in Southern Malawi'. The American Journal of Tropical Medicine and Hygiene, Vol 108, Issue 1, pp. 51-60.

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Larval source management (LSM) could reduce malaria transmission when executed alongside core vector control strategies. Involving communities in LSM could increase intervention coverage, reduce operational costs, and promote sustainability via community buy-in. We assessed the effectiveness of community-led LSM to reduce anopheline larval densities in 26 villages along the perimeter of Majete Wildlife Reserve in southern Malawi. The communities formed LSM committees which coordinated LSM activities in their villages following specialized training. Effectiveness of larviciding by LSM committees was assessed via pre- and post-spray larval sampling. The effect of community-led LSM on anopheline larval densities in intervention villages was assessed via comparisons with densities in non-LSM villages over a period of 14 months. Surveys involving 502 respondents were undertaken in intervention villages to explore community motivation and participation, and factors influencing these outcomes. Larviciding by LSM committees reduced anopheline larval densities in post-spray sampling compared with pre-spray sampling (P < 0.0001). No differences were observed between anopheline larval densities during pre-spray sampling in LSM villages and those in non-LSM villages (P = 0.282). Knowledge about vector biology and control, and someone’s role in LSM motivated community participation in the vector control program. Despite reducing anopheline larval densities in LSM villages, the impact of the community-led LSM could not be detected in our study setting because of low mosquito densities after scale-up of core malaria control interventions. Still, the contributions of the intervention in increasing a community’s knowledge of malaria, its risk factors, and its control methods highlight potential benefits of the approach.

Item Type: Article
Subjects: QX Parasitology > QX 20 Research (General)
QX Parasitology > Insects. Other Parasites > QX 600 Insect control. Tick control
WA Public Health > WA 20.5 Research (General)
WC Communicable Diseases > Tropical and Parasitic Diseases > WC 750 Malaria
Faculty: Department: Clinical Sciences & International Health > Clinical Sciences Department
Digital Object Identifer (DOI):
SWORD Depositor: JISC Pubrouter
Depositing User: JISC Pubrouter
Date Deposited: 20 Dec 2022 16:33
Last Modified: 14 Jun 2023 11:42


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