The hunt for the intermediate host for SARS-CoV-2 continues. It’s pretty universally accepted (the odd conspiracy theorist aside) that this virus, like SARS and MERS, originated in bats. How it made it to people is an important question we’d like to answer to help understand this virus and future risks.

Figuring that out is challenging

Based on what we knew from the original SARS virus and the similarity with SARS-CoV-2 (the cause of COVID-19), we expected ferrets to be one of the species that could be susceptible to infection with the latter. When ferrets were infected with the SARS virus, they got sick (unlike cats that just shed the virus).

While the whole story hasn’t been sorted out, it seems pretty clear that one or more animal species at the Wuhan Seafood Market (which sold much more than just aquatic animals and their products) was the source of the novel coronavirus.  Just like SARS.

Once again, this has raised concerns about markets where diverse live

Two reports came out this week, both detailing the scourge of antibiotic resistance.