Sick Kitten :(

Question
Amost a year ago we got two kittens.  Sadly, about 3 months ago, one died
with FIP.  We tested the other one and found him to be a carrier of the Carona
virus.  The vet said not to get another cat, but if we had to, (and we did) to
wait till the kitten to be was about 3 months old and he should no contract
the virus.  So all that to tell you the problem.  Our new kitten we have had for
almost a month.  For the past 3-4 Days he has been sooo lazy.  He doesn't
play hardly anymore, and his coat looks awful.  He still eats twice a day and
has dry food throughout the day.  He drinks plenty and has normal bathroom
visits.  When i pick him up he feels really warm, so i guess he has a fever.  I
am just wondering if he could have something else besides FIP.  He cleans
himself and everything.  He just isn't playing like a 4 month old kitten boy is
supposed to play. :(

Answer
It is certainly possible that he could have another virus, which are very common in kittens.  A host of viral respiratory diseases can cause lethargy, fever and other symptoms.  So yes I would say that it is possible to be something other than FIP.  If he has not improved or stops eating/drinking I would suggest having him seen by your veterinarian.

Best of luck to you and your feline friend.