How to handle Orphaned Kittens
A general note about taking in strangers. Always, always isolate a rescued cat or kitten from your pets for at least fourteen days and until it has been examined by your veterinarian and tested for lethal disease; even a tiny kitten can pack a killer virus or parasite. Make the kitten comfortable in a room that is frequently visited by you and that is separate from your other pets, and wash your hands with an antibacterial soap between visits to the new animal and your household. Consult with your veterinarian so that you are able to weigh the risks against the many blessings of taking in an orphan kitten.
The following, numbered sequence could be applied generally to an orphaned kitten of any age but is particularly important for the frail newborn. Less detailed instructions for older kittens follow. Good luck to foster mothers everywhere.