Hello, my name is***** and I have over 20 years of experience as a veterinarian. I understand that you wish to know the symptoms of feline distemper (panleukopenia or feline parvovirus).
Symptoms include high fever, dehydration with extreme thirst, vomiting, diarrhea
(possibly bloody), and possible sudden death in cats. Infected cats can shed the virus 2-3 days before showing symptoms and it can take 4-5 days for a cat to show symptoms after being exposed.
Kittens or unvaccinated cats are highly susceptible. The vaccines we have available give excellent protection, even one vaccine can help tremendously.
The virus is transmitted primarily by the fecal-oral route which means that cats and kittens pick up the virus from objects contaminated by virus particles in feces. Litter boxes, grooming themselves after walking in areas that are contaminated by virus particles, contaminated food
and water bowls or toys are all possible places and ways the virus can be picked up.
Please let me know if you have any further questions.