Preview next quiz:
Why do we need a new vaccine for Influenza every year?
A. because the virus mutates very quickly
B. because the virus is unknown
C. because the vaccine works for a short time
D. none of the answers
Disclaimer:
Medical Quiz should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational and educational purposes only.