My cat had 6 kittens now 5 of them have died I didn't one the last to die. I need to find out if it is air borne or if I need to diinfect I have a another female about to deliver. They started very spunky. Then their eyes started pussing out closing shut. So at that point iI took a wazrm rag. Then they seem to be alone want to be by their selvess no energy. Then they get very lethargic. Finally they die. Please help!!