TY - JOUR
T1 - First report of Aedes aegypti transmission of chikungunya virus in the Americas
AU - Díaz-González, Esteban E.
AU - Kautz, Tiffany F.
AU - Dorantes-Delgado, Alicia
AU - Malo-García, Iliana R.
AU - Laguna-Aguilar, Maricela
AU - Langsjoen, Rose M.
AU - Chen, Rubing
AU - Auguste, Dawn I.
AU - Sánchez-Casas, Rosa M.
AU - Danis-Lozano, Rogelio
AU - Weaver, Scott C.
AU - Fernández-Salas, Ildefonso
N1 - Publisher Copyright:
© 2015 by The American Society of Tropical Medicine and Hygiene.
PY - 2015/12
Y1 - 2015/12
N2 - During a chikungunya fever outbreak in late 2014 in Chiapas, Mexico, entomovirological surveillance was performed to incriminate the vector(s). In neighborhoods, 75 households with suspected cases were sampled for mosquitoes, of which 80% (60) harbored Aedes aegypti and 2.7% (2) Aedes albopictus. A total of 1,170 Ae. aegypti and three Ae. albopictus was collected and 81 pools were generated. Although none of the Ae. albopictus pools were chikungunya virus (CHIKV)-positive, 18 Ae. aegypti pools (22.8%) contained CHIKV, yielding an infection rate of 32.3/1,000 mosquitoes. A lack of herd immunity in conjunction with high mosquito populations, poor vector control services in this region, and targeted collections in locations of human cases may explain the high infection rate in this vector. Consistent with predictions from experimental studies, Ae. aegypti appears to be the principal vector of CHIKV in southern Mexico, while the role of Ae. albopictus remains unknown.
AB - During a chikungunya fever outbreak in late 2014 in Chiapas, Mexico, entomovirological surveillance was performed to incriminate the vector(s). In neighborhoods, 75 households with suspected cases were sampled for mosquitoes, of which 80% (60) harbored Aedes aegypti and 2.7% (2) Aedes albopictus. A total of 1,170 Ae. aegypti and three Ae. albopictus was collected and 81 pools were generated. Although none of the Ae. albopictus pools were chikungunya virus (CHIKV)-positive, 18 Ae. aegypti pools (22.8%) contained CHIKV, yielding an infection rate of 32.3/1,000 mosquitoes. A lack of herd immunity in conjunction with high mosquito populations, poor vector control services in this region, and targeted collections in locations of human cases may explain the high infection rate in this vector. Consistent with predictions from experimental studies, Ae. aegypti appears to be the principal vector of CHIKV in southern Mexico, while the role of Ae. albopictus remains unknown.
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U2 - 10.4269/ajtmh.15-0450
DO - 10.4269/ajtmh.15-0450
M3 - Article
C2 - 26416113
AN - SCOPUS:84946232908
SN - 0002-9637
VL - 93
SP - 1325
EP - 1329
JO - American Journal of Tropical Medicine and Hygiene
JF - American Journal of Tropical Medicine and Hygiene
IS - 6
ER -