Not very known by vets, but many breeders including myself have exoerienced extremely ill kittens due to heat in mom and them still drinking her milk. It doesnt always occur, but some females seem to have this effect on their babies due to the hormones released with heat.No, not yet. But I suspect soon. She has begun to ignore the kitten. Is more interested in rushing to the kitchen when I go than continuing care for her baby.