People who can get the.
Influenza vaccines, also known as flu shots or flu jabs, are vaccines that protect against infection by influenza viruses. New versions of the vaccines are developed twice a year, as the influenza virus rapidly changes.
Some vaccines are only approved for adults. For example, the recombinant influenza vaccine (RIV) is approved for people aged 18 years and.
The nasal spray flu vaccine can only be used in healthy, younger adults who are not.