Community effectiveness of indoor spraying as a dengue vector control method: A systematic review
Moody Samuela, Dorit Maozb, Pablo Manriquec, Tara Wardd, Silvia Runge‐Ranzingere, João Toledof, Ross M. Boyceg, Olaf Horsticka✉
- aInstitute of Public Health, University of Heidelberg, Heidelberg, Germany
- bPublic Health Consultant, Muenchen, Germany
- cUniversidad Autónoma de Yucatán, Mérida, México
- dPublic Health Consultant, Accra, Ghana
- ePublic Health Consultant, Ludwigsburg, Germany
- fMinistry of Health, Brasilia, Brazil
- gDivision of Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, United States of America
- ✉Corresponding author
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Abstract
BACKGROUND: The prevention and control of dengue rely mainly on vector control methods, including indoor residual spraying (IRS) and indoor space spraying (ISS). This study aimed to systematically review the available evidence on community effectiveness of indoor spraying. METHODS: A systematic review was conducted using seven databases (PubMed, EMBASE, LILACS, Web of Science, WHOLIS, Cochrane, and Google Scholar) and a manual search of the reference lists of the identified studies. Data from included studies were extracted, analysed and reported. RESULTS: The review generated seven studies only, three IRS and four ISS (two/three controlled studies respectively). Two IRS studies measuring human transmission showed a decline. One IRS and all four ISS studies measuring adult mosquitoes showed a very good effect, up to 100%, but not sustained. Two IRS studies and one ISS measuring immature mosquitoes, showed mixed results. CONCLUSIONS: It is evident that IRS and also ISS are effective adulticidal interventions against Aedes mosquitoes. However, evidence to suggest effectiveness of IRS as a larvicidal intervention and to reduce human dengue cases is limited-and even more so for ISS. Overall, there is a paucity of studies available on these two interventions that may be promising for dengue vector control, particularly for IRS with its residual effect.
TL;DRIt is evident that IRS and also ISS are effective adulticidal interventions against Aedes mosquitoes, but evidence to suggest effectiveness of IRS as a larvicidal intervention and to reduce human dengue cases is limited–and even more so for ISS. (Semantic Scholar)