
This CDC chart shows the flu vaccine ranging from 10 to 60 percent effectiveness since 2004. Graphic credit: CDC
https://www.cdc.gov/flu/professionals/vaccination/effectiveness-studies.htm
This CDC chart shows the flu vaccine ranging from 10 to 60 percent effectiveness since 2004. Graphic credit: CDC
https://www.cdc.gov/flu/professionals/vaccination/effectiveness-studies.htm