Why do doctors recommend that people get a flu shot each new flu season?

Answer 1

Because each season the flu shot contains a new range of flu virus strains to protect against that year's likely flu types. The types are continuously changing because a virus such as the influenza mutates quickly, making it difficult for the immune system to recognize and destroy the new strains, and necessitating a new vaccine.

Answer 2

Because as a result of preexisting conditions and medications these people can least afford the affects of a bad bout of flu.

Answer 3

Some doctors recommend that their patients should get the flu shot each year because it will keep you safe from whatever flu maybe coming at you that year.

Answer 4

so you don't get the disease.