Annual Influenza Vaccinations Are Important for All Individuals Because

Annual influenza vaccinations are important for all individuals because

A) the virus is stable so once the vaccine is administered, protection from antibodies is lifelong.

B) the vaccine prevents secondary infections in individuals with influenza.

C) the oral-fecal transmission route makes it easy to pass to others.

D) the highly contagious nature of the virus means that transmission from a robust individual to those with a weaker immune system, such as the young or the elderly, is facilitated in crowded winter conditions