First report on the #transmission of #Zika virus by #Aedes (Stegomyia) aegypti (L.) (Diptera: Culicidae) during the 2018 Zika #outbreak in #India (Acta Trop., abstract)

[Source: US National Library of Medicine, full page: (LINK). Abstract, edited.]

Acta Trop. 2019 Aug 20:105114. doi: 10.1016/j.actatropica.2019.105114. [Epub ahead of print]

First report on the transmission of Zika virus by Aedes (Stegomyia) aegypti (L.) (Diptera: Culicidae) during the 2018 Zika outbreak in India.

Singh H1, Singh OP2, Akhtar N3, Sharma G4, Sindhania A5, Gupta N6, Valecha N7.

Author information: 1 National Institute of Malaria Research, Sector 8 Dwarka, New Delhi 110077, India. Electronic address: hspawar@rediffmail.com. 2 National Institute of Malaria Research, Sector 8 Dwarka, New Delhi 110077, India. Electronic address: singh@nimr.org.in. 3 National Institute of Malaria Research, Sector 8 Dwarka, New Delhi 110077, India. Electronic address: nasreen84akhtar@gmail.com. 4 National Institute of Malaria Research, Sector 8 Dwarka, New Delhi 110077, India. Electronic address: gunjan.sharma@gmail.com. 5 National Institute of Malaria Research, Sector 8 Dwarka, New Delhi 110077, India. Electronic address: ankita@mrcindia.org. 6 Indian Council of Medical Research, Ansari Nagar, New Delhi, 110029, India. Electronic address: ngupta@icmr.org.in. 7 National Institute of Malaria Research, Sector 8 Dwarka, New Delhi 110077, India. Electronic address: neenavalecha@gmail.com.

 

Abstract

In a recent outbreak of Zika virus (ZIKV) infection in Jaipur city (Rajasthan, India), a total of 159 cases were reported in September 2018. In order to identify vector responsible for Zika transmission, mosquitoes were collected from houses with reported Zika cases and nearby houses. A total of 108 pools containing 522 mosquitoes were tested for presence of ZIKV virus using RT-PCR and Real Time RT-PCR. We detected presence of ZIKV in three pools of Aedes (Stegomyia) aegypti (L.), out of a total of 79 pools with 383 Ae. aegypti through RT-PCR as well as real-time RT-PCR. The presence of ZIKV in Ae. aegypti was further confirmed by DNA sequencing of the partial envelope region of ZIKV. Homology search of DNA sequence revealed highest identity (100%) with a ZIKV isolate from human from the study area which support the role of Ae. aegypti acting as a ZIKV vector. All other mosquitoes (Aedes vittatus and Culex quinquefasciatus) were negative for ZIKV. None of the F1 generation mosquito pools (276 mosquitoes in 43 pools) were found positive. This is the first report of presence of ZIKV in Ae. aegypti from the Indian subcontinent.

Copyright © 2019. Published by Elsevier B.V.

KEYWORDS: Entomological surveillance; Outbreak; RT-PCR; Transmission risk

PMID: 31442386 DOI: 10.1016/j.actatropica.2019.105114

Keywords: Zika Virus; Aedes aegypti; India; Mosquitoes.

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gimi69

I am an Italian blogger, active since 2005 with main focus on emerging infectious diseases such as avian influenza, SARS, antibiotics resistance, and many other global Health issues. Other fields of interest are: climate change, global warming, geological and biological sciences. My activity consists mainly in collection and analysis of news, public services updates, confronting sources and making decision about what are the 'signals' of an impending crisis (an outbreak, for example). When a signal is detected, I follow traces during the entire course of an event. I started in 2005 my blog ''A TIME'S MEMORY'', now with more than 40,000 posts and 3 millions of web interactions. Subsequently I added an Italian Language blog, then discontinued because of very low traffic and interest. I contributed for seven years to a public forum (FluTrackers.com) in the midst of the Ebola epidemic in West Africa in 2014, I left the site to continue alone my data tracking job.

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