"SARS-CoV2 (the virus that causes COVID-19) is a respiratory virus that is almost exclusively contained within the lungs and respiratory tract of infected people, and rarely gets into the blood,” Emily Gallichotte, PhD, a postdoctoral researcher in the department of microbiology, immunology, and pathology at Colorado State University, tells Health.
科罗拉多州立大学微生物学、免疫学与病理学系的博士后研究员艾米丽·盖丽洛特博士告诉健康网说:“新冠病毒是一种呼吸道病毒,几乎完全存在于感染者的肺部和呼吸道中,很少会进入血液中。”
Plus, for a virus to pass to a person through a mosquito or other kind of insect bite—such as a tick bite—the virus must be able to replicate inside the mosquito or tick. Neither the new coronavirus nor any other type of coronavirus has been shown to do that.
而且,病毒要通过蚊子或其他昆虫叮咬(比如蜱虫叮咬)传播给另一个人,病毒必须能在蚊虫或蜱虫体内复制。事实表明,新冠病毒和其他任何一种冠状病毒都无法做到这点。
"It’s quite a complex process,” former US Navy entomologist Joseph M. Conlon, who has extensive worldwide experience in mosquito control and is technical advisor to the American Mosquito Control Association (AMCA), tells Health. “First of all, the mosquito would have to pick up the requisite amount of virus during its bite. The virus must then not only survive the digestive process, but replicate within the mosquito and pass through the gut wall to the coelom (main body cavity) of the mosquito. From there it must make its way to the salivary glands and be expressed by the mosquito as part of its salivary secretions.”
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