admin Administrator Staff member Nov 11, 2019 12,603 465 0 Visit site Nov 8, 2021 #1 The effectiveness of the flu shot varies from year to year, but often, it isn't very high. Why is the flu shot less effective than other vaccines? : Read more
The effectiveness of the flu shot varies from year to year, but often, it isn't very high. Why is the flu shot less effective than other vaccines? : Read more