it hasn't been developed. its a virus from the protista kingdom. so it cannot be healed only managed. Viruses don't leave your body once you get them. they just lay dormant inside your body after they have been healed. they're virtually impossible to kill
you cant get it again
no you cant
Your immune system cant produce antibodies for infections/viruses if it is not exposed to them.
No! That would be really creepy. Humans cant have dogs, and dogs cant have humans.
if there is no plants humans cant get oxygen so naturally people cant exist on earth
IT CANT
you cant prevent different systems??
no you cant, that's why when you are pregnant you are tested to see if you are immune to rubella which i am as i had it as a child
Physically ghost cant touch humans and humans cant touch ghost. But ghost can manipulate dead items in order to kill a human.
they cant
No. humans cant get sick from dogs and daogs cant get sick from humans.
No dogs cant be humans. Unless you wish really hard for it to happen.