FLP shot and new cat

Hello everyone it has been a while since I have written here.  I have an issue I am wondering if anyone can share some insight with me.  Is there a Vet that reviews issues here?

I have been feeding a stray cat in my back yard for about a year now.  I got him fixed a long time ago, but his cries for more attention kept bothering my husband and I so we took him (Sylvester - a tuxedo angora) to the Vet with the intention of having him integrate into the house with 5 other adult cats.  We had him tested for all the different diseases and he came back clean.   Our cats had seen him for over a year living in the back yard.

So we put him on the porch and let the other cats get use to him and finally they walked him into the house.  Not all of them were happy but that is another story.

He had his rabies shot and a month later we took him in for his FLP.  Afterwards all our other cats started to get an upper respitory infection.  It started with the oldest and went fight down the line   costing us $650.00 worth of shots, medications and vitamins trying to keep the younger cats from getting it.

Yesterday I took the last cat in for a shot of antibiotics because she had gotten it too.  I asked the receptionist if it was possible that the FLP they gave Sylvester could have caused all this trouble.  She looked up on the chart and read the words "live virus" is all I heard.  I was shocked.  She said she had never heard of this happening and she would ask the vet if it was possible.

This has been my vet office for over 10 years and they knew we had 5 other cats in the house.  Why in the world would they not tell us of potential problems.  All of our cats are inside cats and probably have very little immune system to any virus.

Don't get me wrong they can get little colds but this was a down right epidemic.  It started with sneezing, watery eyes and then went into heavy congestion and labored breathing.

Anyone every have this happen to them or heard of anything like this?

The vet's office called "it is unlikely" the shot had anything to do with it...

hugs Menou Lover

no one has posted a reply isn't there anyone out there that would know if this is possible?

I don't know what an "FLP" vaccine is. The usual vaccine is "FVRCP" (Feline Viral Rhinotracheitis, Calicivirus, Panleukopenia), I can't even think of what the L might stand for. Feline Leukemia? But that's usually abbreviated "FeLV".

At any rate, most vaccines are "modified live". This means it's a live virus that's been modified so it can't cause disease. Some are made with a killed virus but they aren't as effective. While there have been cases of a vaccine causing the disease (mostly the polio vaccine), it's far more likely that he picked up a nasty bug at the vet clinic (just like human hospitals; terribly germy places) and passed it around. Sorry you and your kitties had to go through that , but it probably wasn't the vaccine that caused it.

thank you

oh my husband just told me to mention that Sylvester the cat that got the vaccine did not get sick, just the other cats in the house.  And that he had been introduced into the home a couple of months before he got his 2nd vaccine, the first being rabies.  I might have gotten the name wrong of the vaccine.