Cats' nails and teeth harbor bacteria and the risk of infection is very high. If you get scratched, wash out the wound and keep an eye out for infection and fever. Rabies, although feared, is relatively rare among humans. Still, you might want to get a pre-exposure vaccination, and have all ferals vaccinated. Any cat who bites a human must be quarantined and examined.
Infected cat scratches can cause lymph node enlargement, fever, fatigue, sore throat and headaches.
If you're scratched, immediately wash the wound. Contact your doctor if any symptoms occur. Don't touch your eyes after contact with feral cats. Fleas and Ticks. Feral cats may carry ticks infected with Lyme disease, which could transfer to humans and other animals.