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