From the CDC website:
These updated estimates were derived from data collected from the U.S. Flu VE Network from November 10, 2014, through January 30, 2015, and include an additional four weeks of data in comparison to CDC's early VE estimates released in mid-January.
When VE against all influenza viruses was combined, the overall VE estimate was 19% (95% CI: 7%â€“ 29%). In practical terms, this means the flu vaccine reduced a person's risk of having to seek medical care at a doctor's office for flu illness by 19%.
Sure keep telling yourself it's EBP. SO sad bandwagon misinformation is spread in our professionâ€¦.and others claiming people with data are the ones spreading misinformation.
"It's 19% effective, so you should just take it"â€¦.simple minds, simple minds.