effectiveness of flu vaccine

Flu Season Ahead
This Saturday marks the beginning of flu season -- which spans the months of October to May -- so that means it's time to get your flu shot. The ideal time is to get vaccinated before the end of October. The CDC has issued immunization guidance with a few changes worth noting, which we have for you here.  
The flu is really pissed off this year, and wants to take it out on your lungs. And there isn't a whole lot you can do about it. The annual vaccine, which normally is about 60 percent effective, is a disturbingly low 23 percent this year, according to a new CDC report.
Each year, the CDC estimates the effectiveness of the current season s flu vaccine. They collected data from about 2300 children and adults in the U.S. Influenza Vaccine Effectiveness Network