Some cats infected with the virus do not become ill because they are able to clear the virus from their body. (1800petmeds.com)
Nearly 100 percent of dogs that come in contact with the virus become infected, regardless of age or vaccination history. (lowchensaustralia.com)
Live virus vaccines have serious potential drawbacks, though, including harmful infection with the virus in people who have weakened immune systems. (sciencedaily.com)