How specifically would coronavirus go from animal to human? Why is the virus compatible in both animals and humans?
I've heard it is believed it is from a bat, but that a bat couldn't have transferred it to human. So, how would a virus like this get transferred to human? What caused this virus to be more contagious than the SARS virus in 2003? Could a human to animal spillover happen?
- Robert JLv 72 months ago
Many diseases affect both humans and animals.
Bats are mammals, the same as we are, so it's not all that strange.
Diseases that can affect both animals and humans are called "Zoonotic diseases".
Tetanus is carried by horses.
Pigs can get a large proportion of human diseases (and vice versa) - that's why they were considered "unclean" by many cultures, they easily become ill by transfer of human diseases and other people handling them can then catch those diseases in turn.
Salmonella is a very common one that can infect birds and humans - a common "food poisoning" type bug.
Hanta virus is carried by rats.
Rabies is infectious to many types of animal.
Some bats (vampire bats) feed on animals - mainly mammals - so a disease evolving to take advantage of that means of transmission is not that odd.
Another example of that cross-species transfer by a parasite is Malaria, transmitted between humans and other species by mosquitos.
If you want a really weird disease adaptation / evolution - Kuru.
That infects peoples brains and the only way it is passed is by the infected brain being eaten.
A disease that took advantage of cannibal practices!
- ZirpLv 72 months ago
viruses don really DO things. They get transported by coughs or sneezes or urine. All they need to get into you is you bringing them to your mucous membrane, or a wound, or an eye. Blood from an animal can do it too.
> Why is the virus compatible in both animals and humans?
because this virus doesn't see the difference. We are animals too. Sometimes the presence or absence of proteins or anti-bodies helps or prevents a virus from infecting a specific species or part of a species
- Anonymous2 months ago
A mutation is needed for a virus to infect a new kind of animal. Mutations are random but sometimes, by chance, the needed mutation will happen once in a while. A virus has a protein coat. It is the protein that can trick a cell into letting the virus inside. Once inside the virus DNA can instruct the cell to make more copies of it. Different kinds of animals require different protein "keys" to get inside their cells. A key that allows the virus to get inside, say, bats, would normally not allow it to get inside humans or even pangolins, but if there is a mutation in the protein coat, then it just may allow the virus to infect a new kind of animal.
- ☼Jims Brain☼Lv 62 months ago
It called a crossover. Viruses need hosts to infect.
As long as the hosts have biological similarities, they can adapt to a new host. And animals can also get human infections.
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- JJLv 72 months ago
According to researchers, the virus was transmitted from Horseshoe Bats to an unknown host, probably live snakes or pangolins on sale at the wet market. Humans are infected by eating undercooked meat.