Answers
(To view the the questions page, press on the answer number)
 |
|
The main reason infants fail to respond to measles vaccine is the presence of antibody to
measles, which infants get from their mothers during pregnancy. It takes only a very
small amount of antibody to kill the measles vaccine. About 5% of infants still have
enough measles antibody at 12 months of age to do just that.
Studies of children who failed to respond to the first dose of vaccine at 12 to 15 months of age have shown that over 99% of them did respond normally to the second dose. Studies of outbreaks in schools have confirmed that measles is very rare in children who have had two doses of measles vaccine. |
|
|
 |
Posted by the Canadian Paediatric Society, July 1997. |
 |  |  |