Hi doctor. please forgive me if I ask a silly question but please be kind enough to answer me my problem is rabies fear. I got a scratch on my leg in the morning from a branch of a dry tree, which had fallen on the ground. previous night there was a carcass near that area and three were dogs near it. My fear is that if there was the dog saliva on that brach, iam i at rabies risk. Need i take the vaccine?