Plant Sciences, Zoology & Evolution / Re: How did mink catch Covid-19? And what threat do their mutations pose?« on: 08/11/2020 20:26:11 »
Quote from: OP
How did the mink get covid? Human to mink transmission or some other route?It was first noticed in mink farms - I have heard of outbreaks in Spain and the Netherlands in July-20, and now in Denmark (November-20). There have been major culling operations in both countries.
Mink farms have very concentrated populations of mink in small cages, so it only takes one to get sick for all of them to get sick.
- the most likely route of infection is from humans to mink.
- Humans travel from farm to farm, spreading coronavirus
- But when a virus gets into a new host (eg mink), it is likely that mutated virus will grow better in their new host
There have been cases reported where the mink have then transmitted this mutated version back to humans
-The big questions are whether this new mutation:
1. will affect humans more severely than the original human virus strains
2. will evade the human immunity conferred by infection by the human strains
3. will evade the human immunity conferred by the vaccines now being tested
I understand in the UK ,sewage has been monitored to locate covid-19 outbreaks.Yes, this has proven to be a useful tool in many countries.
Rats live in sewers, could rats contract a mutation of covid-19.This is possible.
Fortunately, unlike several previous rat-borne plagues, humans are now well aware of rats as a disease vector, and use cats and rat-traps to keep them out of our houses (at least, in Western countries).