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Volume 23, Number 5—May 2017
Research

Insecticide-Treated Nets and Protection against Insecticide-Resistant Malaria Vectors in Western Kenya

Eric Ochomo1Comments to Author , Mercy Chahilu1, Jackie Cook, Teresa Kinyari, Nabie M. Bayoh, Philippa West, Luna Kamau, Aggrey Osangale, Maurice Ombok, Kiambo Njagi, Evan Mathenge, Lawrence Muthami, Krishanthi Subramaniam, Tessa Knox, Abraham Mnavaza, Martin James Donnelly, Immo Kleinschmidt, and Charles Mbogo
Author affiliations: Kenya Medical Research Institute (KEMRI), Kisumu, Kenya (E. Ochomo, M. Chahilu, A. Osangale, M. Ombok); London School of Hygiene and Tropical Medicine, London, UK (J. Cook, P. West, I. Kleinschmidt); University of Nairobi, Nairobi, Kenya (T. Kinyari); US Centers for Disease Control and Prevention–Kenya, Nairobi (N.M. Bayoh); KEMRI, Nairobi (L. Kamau, E. Mathenge, L. Muthami); Ministry of Health, Nairobi (K. Njagi); Liverpool School of Tropical Medicine, Liverpool, UK (K. Subramaniam, M.J. Donnelly); World Health Organization, Geneva, Switzerland (T. Knox, A. Mnavaza); University of Witwatersrand, Johannesburg, South Africa (I. Kleinschmidt); KEMRI, Kilifi, Kenya (C. Mbogo); KEMRI–Wellcome Trust, Nairobi (C. Mbogo)

Main Article

Table 3

Incidence of malaria parasite infection in net users and non–net users in low– and high–insecticide resistance clusters, Kenya, 2013 and 2014

Parameter No. children Follow-up time, person-years No. infections detected Incidence, infections/person-year (95% CI) Adjusted RR* (95% CI) p value
Low resistance (mortality >82%)
Non–net users 175 15.6 63 4.0 (3.2–5.2) 1.00
Net users
 760
 182.9
 415
 2.3 (2.1–2.5)
 0.61 (0.42–0.88)
 0.01
High resistance (mortality <82%)
Non–net users 129 9.0 48 5.3 (4.0–7.1) 1.00
Net users
 772
 167.7
 494
 2.9 (1.7–3.2)
 0.55 (0.35–0.87)
 0.01
Interaction parameter 0.86 (0.48–1.55) 0.63
Change in incidence per 10% increase in mosquito mortality 0.96 (0.87–1.06) 0.45

*Adjusted for district, year, and visit month.

Main Article

1These authors contributed equally to this article.

Page created: April 14, 2017
Page updated: April 14, 2017
Page reviewed: April 14, 2017
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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