It was a dog that the shelter had just picked up from a house where it was pretty much chained and neglected for many years. I doubt that it was vaccinated by its owners but as soon as he got to the shelter they vaccinated him. About 2 days later, I went to the shelter to look at some dogs and it was going for a walk and bit my arm. This was in February. I didn't get the rabies shot because they told me not to worry because rabies hasn't been prevalent in the U.S for years. Could this be another infection? My wound is completely healed and its a bump right on the scar. It has been itchy before off and on since the bite. Please let me know what it could be and what I should do. Thanks.