What if I was bitten by a dog a long time ago and didn't get an injection?

After being bitten by a dog, it is generally recommended to go to the hospital within 24 hours to inject rabies vaccine to prevent infection with rabies. If there is no injection after being bitten by a dog, it is recommended to pay attention to observation, or go directly to the hospital to do rabies vaccine antibody testing. If there is no antibody, rabies vaccine can be injected directly to prevent disease.