[EBH]

What is really interesting is in my way back machine, someone was reporting early on if one owned several cats (known for having coronaviruses and immunity) that one might already have some level of natural immunity already. Of course the factcheckers claimed that was false. #catlady

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7215164/

[mewzilla]

I'll see your fascinating link with another. :-)

What lessons about vaccine development can be learnt from animal coronaviruses?

Note the part about antibody dependant enhancement.