rabies and tetanus are both similar in that during the time the infection starts you can give your immune system a lead on it and stop it immediately. takes like 72 hours for these viruses to get really bad so it works.

probably the only two vaccines that i would approve of generally. i didn't notice any particularly bad effects when i had it after stepping on rusty nails.

there is something of a blurry line between virus and poison - venoms are often constructed in similar ways in that they bind to RNA or other proteins and change the balance of a system to cause fatal effects, usually paralysis or like rabies, hyperthermia.