Entomological Survey during Zika Virus Infection in Ahmedabad, Gujarat
Abstract
Three laboratory-confirmed Zika virus cases were reported from Bapunagar area, Ahmedabad District, Gujarat on 15 May 2017. Vector survey was done at two residential localities and one Govt. Hospital of the affected area and five Private Hospitals nearer to these colonies. Laboratory detection of Zika virus in field collected mosquitoes was done by using RT-PCR. During Aedes immature survey out of 2558 total houses searched in Ahmedabad affected area HI (5.6) and out of 4439 total containers searched CI & BI (3.1, 5.4) while on seeing individual affected area it was found that at Parmeshwar park the entomological parameter HI was found high (11.3). The overall main potential breeding containers in the affected areas were found mainly to be Scrap (50%), Kothi (Cement tank) (16.7%) and Mud pots (7.7%). High HI shows high risk of transmission of the disease. Total Aedes Mosquito collection for RNA extraction process shows that out of 103 total F1 generation reared mosquitoes had Females (54%) and Males (45.6%) while out of total 35 mosquitoes collected by aspirator had Males (57%) and Females (43%) and all were found negative for Zika Virus during RT-PCR. These results demonstrate that such high Aedes indices can lead to new episode of vector borne diseases especially in concern with Zika outbreak. Potential breeding sources like scrap materials, water logging due to leakage in water supply, bird pans and plastic cups were found with Aedes breeding during the survey suggesting the potential of the area for disease transmission.
References
Cao-Lormeau VM, Blake A, Mons S et al. Guillain-Barre Syndrome outbreak associated with Zika virus infection
in French Polynesia: a case-control study. Lancet 2016; 22: 913-915.
Centers for Disease Control and Prevention. Symptoms, Diagnosis, & Treatment. Zika virus. Atlanta: CDC 2016;
-7.
Duffy MR, Chen TH, Hancock WT et al. Zika virus outbreak on Yap Island, Federated States of Micronesia.
N Engl J Med 2009; 360: 2536-2543.
Grard G, Caron M, Mombo IM et al. Zika virus in Gabon (Central Africa)-2007: a new threat from Aedesalbopictus?. PLoS Negl Trop Dis 2014; 8-10.
Hayes EB. Zika Virus Outside Africa. Emerging Infectious Diseases 2009; 15(9): 1347-1350.
Kraemer Moritz UG, Sinka Marianne E, Duda Kirsten A et al. The global distribution of the arbovirus vectors
Aedes aegypti and Ae.albopictus. Life 2015; 4: e08347.
MacNamara FN. Zika virus: a report on three cases of human infection during an epidemic of jaundice in
Nigeria. Trans R Soc Trop Med Hyg 1954; 48: 139-145.
Marchette NJ, Garcia R, Rudnick A. Isolation of Zika virus from Aedes aegypti mosquitoes in Malaysia. Am
J Trop Med Hyg 1969; 18: 411-415.
McKenna M. ZiV: A new threat and a new kind of pandemic. Germination. [Accessed on August 21, 2018].
Available from: http://phenomena.nationalgeographic.com/2016/01/13/zika-2/.
Smithburn KC, Kerr JA, Gatne PB. Neutralizing antibodies against certain viruses in the sera of residents of India. J Immunol 1954; 72: 248-257.
World Health Organization. WHO Director General summarizes outcome of emergency committee
meeting on Zika virus. [Accessed on August 21, 2018]. Available from:www.who.int/mediacentre/news/
statements/2016/emergency-committee-zika/en/1.
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