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.
The flu typically lasts for as few as three days to as many as two weeks. If you act quickly, though, you may be able to shorten the length of time you're sick by taking an antiviral medication such as Tamiflu (oseltamivir) or Relenza (zanamivir).