Definitely!

Earlier this year, one our cats got a bad cold. Sneezing and snotty
nose. She was behind on vaccinations at the time. She went to the vet,
got meds, and improved. A few days later, Jay Jay got it, only he got
it worse. Fever, dehydrated, no appetite. He looked like he had a
hangover. He had his first vaciinations the previous year, and he was
a couple months overdue for the next vaccination. He went to the vet,
got more meds (fluids, shot to start antibiotics, and higher dosage
pills since he is larger). As he was getting over it, Chase started
sneezing. For one day only. He got over it. He was also current on his
vaccinations.

Last month, Christi got it again. She had not been vaccinated yet
since she was sick at the time of the previous vet visit. This time,
she was the only one to get it.

If they are going to be hanging out together, they share their germs.
URIs are very common in catteries simply because one cat can set it
off. If they are already vaccinated, they will be able to fight it off
and deal with it.

Also, since meeting new housemates is stressful, that makes it easier
for stuff like this to get going.

Personally, I won't be letting the vaccinations lapse again. Jay Jay
was miserable for several days because of this, and he still had to
get a checkup and vacinnation after he was better. Had I done it
earlier, I would have saved him the misery, saved me the worry, saved
a trip to the vet, and saved $100 too.

I am so glad that Chase got updated when he was there to have his
toenails checked (he ripped two out, so we wanted to make sure they
didn't get infected).

The only vaccine I would recommend in your situation for your resident cats
is the bivalent Heska UltraNasal FVRC (rhinotracheitis virus and calicivirus
only). This vaccine produces very quick local immunity- where the cats need
it the most- in about 2 days. They don't need *any* other vaccines. Avoid
the FeLV and especially the FIV vaccines.

Good luck,

Phil