My 18mo old DS got the chicken pox vaccine at his 12 month check up. He got a rash on his left thigh late last week that got worse over the weekend. I took him to see the doc and she said it was shingles. (She originally said it was CP, but another doc took a look and thought it was shingles). And I guess what I don't understand is how he got shingles and NOT a mild case of CP. I thought you had to have CP in order to get shingles.. Could the vaccine be responsible? I've done a little bit of searching today for any relationship between the CP vacccine and shingles, but I haven't really come up with anything. Thankfully he's got a very mild case and it really hasn't effected him all that much.