How long does the vaccine protect someone against chickenpox?
Research has shown that protection has lasted as long as the vaccinated persons have been studied so far (25 years in Japan, and more than 10 years in the U.S.) More studies are being done. Q: Can you still get chickenpox disease if you have had the shot? A: After vaccination, about 1 in 10 persons do not develop enough protection to completely prevent them from getting chickenpox disease. If they come in close contact with a person with chickenpox, they may develop a mild case of chickenpox with less than 50 blisters. (This kind of chickenpox is called breakthrough disease.) It will usually last only a few days, with no or low fever and few other symptoms. They may miss no school or 1-2 days of school (these children should stay home until the blisters have formed scabs or if there are no blisters present, until no new spots or bumps are forming). The number of children with breakthrough disease should diminish as they receive a second dose of the vaccine. Q: Can the 2-dose hepatitis
