Honestly, I doubt they would manifest FIP one right after the other like that. Not like I'm the expert, but when Smudge 1 went, I did a lot of research. I would do as the poster that recommended zithromax said. It won't hurt if it is FIP.
Were these littermates? Or were they from the same shelter\Originally Posted by nowonder
He does not look good at all. When we took him to the vet, the main issue we thought was roundworms. The vet told us to give him Drontal and see how he is tomorrow, figuring it was worms and hoping it wasn't FIP. So we gave him the drontal, (which is probably the worst thing to do for a sick cat) and he is not good now. He also had some type of seizure just now. And something is hurting him a little when we move him. This is less than 24 hours. Sissy was 3 days. What the HELL is going on here??!!