« Previous Abstract"Citywide Control of Aedes aegypti (Diptera: Culicidae) during the 2016 Zika Epidemic by Integrating Community Awareness, Education, Source Reduction, Larvicides, and Mass Mosquito Trapping"    Next Abstract"Identification of 2,3-dimethyl-2,3-diisobutyl succinonitrile in laser printer emissions" »

J Med Entomol

Title:		"El Nino Southern Oscillation (ENSO) effects on local weather, arboviral diseases, and dynamics of managed and unmanaged populations of Aedes aegypti (Diptera: Culicidae) in Puerto Rico"
Author(s):		Barrera R; Acevedo V; Amador M; Marzan M; Adams LE; Paz-Bailey G;
Address:		"Dengue Branch, DVBID, Centers for Disease Control and Prevention, 1324 Calle San Juan, Puerto Rico 00920, Canada. Department of Health of Puerto Rico, 1111 Av. Tte, Cesar Luis Gonzalez, San Juan, Puerto Rico 00927, Canada"
Journal Title:		J Med Entomol
Year:		2023
Volume:		60
Issue:		4
Page Number:		796 - 807
DOI:		10.1093/jme/tjad053
ISSN/ISBN:		1938-2928 (Electronic) 0022-2585 (Linking)
Abstract:		"We investigated the effects of interannual El Nino Southern Oscillation (ENSO) events on local weather, Aedes aegypti populations, and combined cases of dengue (DENV), chikungunya (CHIKV), and Zika (ZIKV) viruses in 2 communities with mass mosquito trapping and 2 communities without mosquito control in southern Puerto Rico (2013-2019). Gravid adult Ae. aegypti populations were monitored weekly using Autocidal Gravid Ovitraps (AGO traps). Managing Ae. aegypti populations was done using 3 AGO traps per home in most homes. There were drought conditions in 2014-2015 concurrent with the emergence of a strong El Nino (2014-2016), wetter conditions during La Nina (2016-2018), a major hurricane (2017), and a weaker El Nino (2018-2019). The main factor explaining differences in Ae. aegypti abundance across sites was mass trapping. Populations of Ae. aegypti reached maximum seasonal values during the wetter and warmer months of the year when arbovirus epidemics occurred. El Nino was significantly associated with severe droughts that did not impact the populations of Ae. aegypti. Arbovirus cases at the municipality level were positively correlated with lagged values (5-12 mo.) of the Oceanic El Nino Index (ONI), droughts, and abundance of Ae. aegypti. The onset of strong El Nino conditions in Puerto Rico may be useful as an early warning signal for arboviral epidemics in areas where the abundance of Ae. aegypti exceeds the mosquito density threshold value"
Keywords:		Animals Puerto Rico/epidemiology El Nino-Southern Oscillation *Zika Virus Infection *Aedes *Zika Virus Weather Mosquito Vectors Aedes aegypti Enso El Nino Zika dengue;
Notes:		"MedlineBarrera, Roberto Acevedo, Veronica Amador, Manuel Marzan, Melissa Adams, Laura E Paz-Bailey, Gabriela eng England 2023/05/09 J Med Entomol. 2023 Jul 12; 60(4):796-807. doi: 10.1093/jme/tjad053"