Emerging infectious diseases · 2026
Evaluation of Effectiveness of Autocidal Gravid Ovitraps for Preventing Zika Virus Infection, Puerto Rico, USA.
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Madewell Zachary J, Kiplagat Sandra J, Kellum India, Lozier Matthew J, Lorenzi Olga, Perez-Padilla Janice, Medina Freddy A, Muñoz-Jordán Jorge L, Adams Laura E, Paz-Bailey Gabriela, Waterman Stephen H, Barrera Roberto, Sharp Tyler M
Аннотация
Aedes aegypti mosquitoes drive arboviral outbreaks in tropical regions. Zika virus (ZIKV), linked to congenital and neurologic complications, caused a major outbreak in Puerto Rico, USA, in 2016, infecting ≈26% of the population. Autocidal gravid ovitraps (AGOs), pesticide-free devices targeting gravid Ae. aegypti mosquitoes, have been shown to reduce transmission of another arbovirus, chikungunya. During March-May 2017, we conducted a household-based serosurvey in 4 demographically similar communities in southeastern Puerto Rico, 2 with long-term AGO deployment (≈85% coverage) and 2 without, to assess effects of AGOs on ZIKV transmission. Among 271 participants >5 years of age, ZIKV seroprevalence was much lower in intervention than nonintervention communities (9.6% vs. 20.0%). Protective effects were strongest among older adults, larger households (>4 persons), and persons spending more time at home. Although study design and measurement limitations could limit generalizability of results, our findings support AGOs as sustainable nonchemical tools for reducing ZIKV infections.