Understanding Viruses and Prions Practice Test

Your body must be resupplied with fresh antibodies every year in order to maintain immunity to the flu.

Influenza destroys the body's antibody reserves and yearly vaccinations are needed to restore antibody levels.

Your body must be introduced to influenza yearly in order for your body to continue creating antibodies.

Influenza undergoes genetic mutations throughout the year which allows it to evade previously created cellular defenses.