I go to petco to get my cats their rabies vaccines. Luv My Pet comes there every weekend and does them. In 2009 I went in January, so I assumed it was January 2010 that I went again, because I got a reminder in the mail saying my cat Lucas was due. I usually know when I took him because I usually get them done before he goes to his cat shows. He went to two last year, one in January and one in September. Well I took him in last weekend and they gave him a 3 year shot. I just today was looking through some things and found out he got his shot September 19, 2010. That's around 4 months ago. I'm scared to death he's going to get sick now, seeing as it was such a short time frame between the times he got his shots. Does anyone know anything about the effects of this? He was hiding for the first couple of days when we brought him home and not quite acting like himself, but he's usually like that after we get his shots. Thank you in advance.