Once more With the Bats? Strauss Had It Proper: “Die, Fledermaus!”

From Euronews: “Khosta-2: Scientists warn Russian bat virus may infect people and resist COVID vaccines.” It cites to PLOS Pathogens:

An ACE2-dependent Sarbecovirus in Russian bats is immune to SARS-CoV-2 vaccines

Spillover of sarbecoviruses from animals to people has resulted in outbreaks of extreme acute respiratory syndrome SARS-CoVs and the continued COVID-19 pandemic. Efforts to determine the origins of SARS-CoV-1 and -2 has resulted within the discovery of quite a few animal sarbecoviruses–nearly all of that are solely distantly associated to recognized human pathogens and don’t infect human cells. The receptor binding area (RBD) on sarbecoviruses engages receptor molecules on the host cell and mediates cell invasion. Right here, we examined the receptor tropism and serological cross reactivity for RBDs from two sarbecoviruses present in Russian horseshoe bats. Whereas these two viruses are in a viral lineage distinct from SARS-CoV-1 and -2, the RBD from one virus, Khosta 2, was able to utilizing human ACE2 to facilitate cell entry. Viral pseudotypes with a recombinant, SARS-CoV-2 spike encoding for the Khosta 2 RBD had been immune to each SARS-CoV-2 monoclonal antibodies and serum from people vaccinated for SARS-CoV-2. Our findings additional display that sarbecoviruses circulating in wildlife outdoors of Asia additionally pose a risk to international well being and ongoing vaccine campaigns towards SARS-CoV-2

Supply hyperlink

Leave a Comment