A Flu Vaccine for Older Adults: What You Need to Know As the flu season approaches, a new vaccine targeting older adults has been developed.
This development comes as a welcome relief to those who have struggled with the virus's impact on their health in previous years.
How the New Vaccine Works for Older Adults The new vaccine is a quadrivalent formulation that protects against four different influenza viruses: two A subtypes and two B subtypes.