Evidence of vertical transmission and co-circulation of chikungunya and dengue viruses in field populations of Aedes aegypti (L.) from Guerrero, Mexico

• Published in: Transactions of the Royal Society of Tropical Medicine and Hygiene 2016-02, Vol.110 (2), p.141-144
• Main Authors: Dzul-Manzanilla, Felipe, Martínez, Norma E., Cruz-Nolasco, Maximina, Gutiérrez-Castro, Cipriano, López-Damián, Leonardo, Ibarra-López, Jesús, Martini-Jaimes, Andres, Bibiano-Marín, Wilbert, Tornez-Benitez, Citlalli, Vazquez-Prokopec, Gonzalo M., Manrique-Saide, Pablo
• Format: Article
• Language: English
• Subjects: Aedes - virology; Animals; Chikungunya Fever - epidemiology; Chikungunya Fever - genetics; Chikungunya Fever - transmission; Chikungunya virus - genetics; Chikungunya virus - isolation & purification; Cross-Sectional Studies; Dengue - epidemiology; Dengue - genetics; Dengue - transmission; Dengue Virus - genetics; Dengue Virus - isolation & purification; Humans; Infectious Disease Transmission, Vertical - statistics & numerical data; Insect Vectors; Mexico - epidemiology; Real-Time Polymerase Chain Reaction; Sentinel Surveillance
• ISSN: 0035-9203; 1878-3503
• DOI: 10.1093/trstmh/trv106

Background We report results of the entomo-virological surveillance system in Aedes aegypti local populations performed by the Ministry of Health of Guerrero. Methods Indoor-adult Ae. aegypti collected at Acapulco, Zihuatanejo, Coyuca de Benitez and Atoyac de Alvarez (dry season, 2015) were processed for dengue virus (DENV) and chikungunya virus (CHIKV) using RT-PCR. Results We identified different seroptypes of DENV (2, 3 and 4), CHIKV and their co-circulation in field-caught mosquitoes across a significant geographic area. Pools of males were positive for CHIKV and DENV 3 and 4 suggesting vertical transmission. Conclusions Entomo-virological surveillance in Guerrero has identified early circulation of CHIKV and DENV and provided a trigger for timely and focalized vector control actions.