A lot of people can't afford $75 per cat to take to a vet- they will most likely die BUT I have had this numerous times. Get human antibiotics like Novo-Ampicillin, any kind will help -it will not CURE but will get them strong enough to fight a virus. Open capsules and mix with 1Tablespoon milk and 1T water, I use 2 capsules and eyedropper or seringe to give it to them. Give them 2 doses per day ever OTHER day 3 times. Give to the mother also.