Can my dog transmit rabies or other diseases to me before vaccination?

The only way to know if a dog was infected with rabies is to monitor for signs of rabies. The test for rabies uses brain tissue so it can't be done on an alive animal. There is a 15 day window of time from when an animal can transmit rabies until the animal would be showing clinical signs of rabies and then death. If there is no history of a bite wound on the pet dog than the likelihood of rabies is very low. If you ever see any signs of rabies than have him/her examined by a veterinarian. There are other diseases that can be transmitted to humans, like Ringworm, Salmonellosis, Leptospirosis, Campylobacter infection, Giardia infection, Cryptosporidium infection, Roundworms, Hookworms, etc. If your dog was examined by a vet and appears healthy, vaccinated, as well as treated for common intestinal parasites than it is not likely you will get an infection from him/her, especially if you have a normal immune system. Use a monthly heartworm pill that also contains a dewormer, like Heartgard or Interceptor to decrease the chance of your dog getting intestinal parasites in the future.