Tracking the next pandemic: Avian Flu Talk |
Mosquito non-transmission |
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Tabitha111
Adviser Group Joined: January 11 2020 Location: Virginia Status: Offline Points: 11640 |
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Posted: July 21 2020 at 7:39am |
Mosquito non-transmission Date: Fri 17 Jul 2020 Source: Nature Scientific Reports [edited] https://www.nature.com/articles/s41598-020-68882-7 ref: Huang YS, Vanlandingham DL, Bilyeu AN, et al. SARS-CoV-2 failure to infect or replicate in mosquitoes: an extreme challenge. Sci Rep. 2020; 10(1): 11915. doi:10.1038/s41598-020-68882-7 -------------------------------------------------------------------------------- Abstract -------- This research addresses public speculation that SARS-CoV-2 might be transmitted by mosquitoes. The World Health Organization has stated "To date there has been no information nor evidence to suggest that the new coronavirus could be transmitted by mosquitoes." Here we provide the 1st experimental data to investigate the capacity of SARS-CoV-2 to infect and be transmitted by mosquitoes including tests of 3 widely distributed species of mosquito; _Aedes aegypti_, _Ae. albopictus_, and _Culex quinquefasciatus_, representing the 2 most significant genera of arbovirus vectors that infect people. We demonstrate that even under extreme conditions, SARS-CoV-2 virus is unable to replicate in these mosquitoes and therefore cannot be transmitted to people even in the unlikely event that a mosquito fed upon a viremic host. [more at link] Note: Although the tests indicated SARS-CoV-2 virus was unable to replicate in 3 common vector mosquitoes of 2 different genera, one cannot arbitrarily rule out susceptibility of all human-biting mosquitoes in localities where infected people are found. the test above do strongly suggest that mosquitoes in general are not susceptible to infection by this virus. This should end speculation about mosquito biological transmission of SARS-CoV-2 virus being epidemiologically significant. by interrupted mosquito feeding would require very high viremias in infected individuals, probably 10^6-7 or more and for which there is no evidence, followed almost immediately by feeding on a susceptible person. Attention should be turned to other modes of virus transmission. |
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