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.
In the United States, flu is most common in the wintertime and peaks between December and March. The flu vaccine is the single best way to prevent the flu. A flu shot is recommended every year because your bodyâs resistance to flu virus diminishes and the flu virus can change from season to season. A flu shot can take up to two weeks to reach maximum potency, which is why itâs recommended early in the flu season. Influenza can be spread to others up to 24 hours before a person develops symptoms and up to seven days after becoming sick.