Innovation Pharmaceuticals Inc (IPIX)

[KMBJN]

SARS2 has not been found to be transmitted from any animal hosts to humans, and the original host has only been speculated to be bats (or pangolins). Some feel the origin of SARS2 thus was not an animal, but a laboratory (probably by serial passage in cells).

Bats carry similar CoVs to SARS2, but no bats have been found with SARS2 in the wild. There is no evidence of SARS2 jumping back and forth between animals or from animals to humans, unlike flu, for instance. SARS and MERS likely originated from camel and/or bat hosts before they infected humans.

But if SARS2 persists in a human host for a long time (if the person has AIDS or is otherwised immunocompromised or unable to clear SARS2), the virus is more likely to mutate and be less susceptible to vaccines (made to protect from prior versions / strains of SARS2) when it is passed along throughout the human population.