4 definitions of HPR. Definition of HPR in Business & Finance. What does HPR stand for?
According to the Centers for Disease Control (CDC), you should allow two weeks after getting a flu shot to develop protection against the flu. That's because after vaccination, the body has to work for a while to create the protective antibodies to the flu virus. Bear in mind, though, that there's a lot of variation in how fast different people's immune systems work.
If the child is 9 years or older the first year, 1 shot is enough. It takes 10 to 14 days from the time of vaccination to full immunity. The flu vaccine is estimated to protect fully 7 out of 10 children who get the vaccine.