Feline infectious peritonitis is a viral disease of cats seen worldwide. Not all cats infected with the virus causing FIP will become ill, but cats who do develop signs of FIP will likely succumb to the disease eventually.t is thought that the mutation in the virus that leads to FIP is more common in cats with immature or weakened immune systems. The coronavirus is spread through direct contact via the nose and mouth with infected feces, so sharing litter boxes is a major route of transmission of coronavirus.
After infection, immunity to norovirus is usually incomplete and temporary, with one publication drawing the conclusion that protective immunity to the same strain of norovirus lasts for six months, but that all such immunity is gone after two years.
The noroviruses starts to multiply within small intestine once an individual get the infection. The symptoms of the infection will occur usually after 24-48 hours after the infection. And the norovirus incubation period is between the transmission of the norovirus and the early time of the symptoms appear.In the other words, we can say that the incubation period of the infection is usually about 12-hours (less or more) after exposure.he noroviruses starts to multiply within small intestine once an individual get the infection. The symptoms of the infection will occur usually after 24-48 hours after the infection. And the norovirus incubation period is between the transmission of the norovirus and the early time of the symptoms appear.