I’m aware that the CDC released this abysmal report on the effectiveness of this year’s influenza vaccination, including data collected through Jan 30, 2015.
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%.
However, this is missing much (possibly most) of the flu season. Are there more updated numbers on vaccine effectiveness and/or reports that include data from other (non-U.S.) locales with a similar flu season (i.e. temperate Northern Hemisphere)?