My sister had been fostering kittens for the ASPCA for 3 weeks. When she went to return them yesterday, she found out that one of them had ringworm. Now she has come home for Christmas (to our house with my mom's 3 cats). I am also home for Christmas and have my 2 cats with me. She has brought home all of her clothes that the kittens had played in, and the suitcase they had slept on, etc. All 5 of the cats here are healthy (although they might be under a bit more stress since they are around new cats, but they are getting along great), but I am seriously concerned about my cats getting sick. My mom does not seem concerned at all and has no problem with all of my sister's stuff in the house, and the cats playing with it, but I am worried. Nothing has actually been disinfected. I am seriously considering going home tomorrow (although my mom started to cry when I told her this), but is it worth it? Since my cats were exposed to my sister's stuff and my sister herself, will prolonged exposure (for another week) increase the risk of contracting ringworm (opr once they are exposed they are exposed?)? I am so frustrated that they don't seem to be taking this seriously, but am I being overly concerned?? I see that it is not overly contagious supposedly if all the people and pets are healthy, but how likely is it? Any advice would be wonderful. Thank you.