According to a new study published in Scientific Reports, a COVID-19 pandemic caused by a novel coronavirus cannot be transmitted to humans through mosquitos.
“While the World Health Organization (WHO) has definitely determined that mosquitoes cannot transmit the virus, our study is the first to provide conclusive data to support the theory,” said Stephen Higgs, co-author of the Kansas State University research in the UNS.
“Here we provide the first experimental data to examine the ability of SARS-CoV-2 to infect and be transmitted by mosquitoes,” the study noted.
According to the study conducted at the university’s Biosecurity Research Institute, the virus cannot reproduce in three common and widespread species of mosquitoes – Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus – and therefore cannot be transmitted to humans.
Samples taken by the scientists within two hours of inoculation with mosquitoes confirmed the efficient delivery of infectious viruses to these insects.
Due to the absence of any detectable infectious virus in any of the 277 samples taken at all time points 24 hours after inoculation, the scientists said that SARS-CoV-2 cannot replicate in mosquitoes.
“Even if a mosquito was feeding on a person with a virus in their blood, the mosquito would not be a vector if it were feeding on a naive host,” they concluded.
“We show that the SARS-CoV-2 virus is not able to reproduce in these mosquitoes even under extreme conditions and therefore cannot be transmitted to humans even if a mosquito feeds on a viraemic host “wrote the scientists in the study.