K.A.
Hi. I had this problem with my son at about the same age. My pediatrician suggested we give him a short time out every time it happened. The key was to be consistent. Pick him up, put him in the crib and say, in an even and non-threatening tone, "you do not bite people". Leave him there for one minute. Go back, get him and say again, "you do not bite people". Worked for us after only a few times. Good luck.