The CDC recommends that everyone older than six months should get a flu vaccine every flu season with only very rare exceptions, as long as the correct form of the vaccine is given. For example, the recombinant influenza vaccine (RIV) is approved for people aged 18 years and older, while adjuvanted and high-dose inactivated vaccines are approved for people aged 65 years and older.
Pregnant women and people with certain chronic health conditions can get a flu shot. Most people with egg allergies can get a flu shot. Children younger than 6 months of age are too young to get a flu shot.
On the other hand, people with severe, life-threatening allergies to flu vaccines or any ingredient in the vaccine should not get the shot. These allergies might include gelatin, antibiotics, or other ingredients. People with any serious underlying health conditions should also talk to their doctors about getting the flu shot and which type of vaccine would be right for them.