CDC: This year's flu virus has mutated; vaccine less effective [View all]

[davidn3600]

This year’s flu vaccine is not as effective against the current strain of the influenza virus because the virus has mutated, the U.S. Centers for Disease Control and Prevention said Wednesday in an advisory to doctors.

The advisory said 52% of the 85 influenza virus samples collected and analyzed from October 1 through November 22 were different than the virus strains included in this year’s vaccine, indicating a mutation, or drift, of the strain.

The most common strain of the virus reported so far this season is influenza A (H3N2). In the past this strain has been linked to higher rates of hospitalization and death, especially for those at high risk for complications, which is usually the very young, the elderly and those with chronic health conditions.

In February a panel of experts decided on 3 strains of the virus to include in this year’s vaccine. The decision is based on common strains circulating around the globe throughout the year. That information is used to predict which strains will be common during the upcoming flu season. Some years the vaccine is a better match to the circulating strains than others.

http://wgntv.com/2014/12/04/flu-shot-less-effective-this-year-because-current-virus-has-mutated-cdc/

Experts say that the vaccine will still reduce the severity of symptoms...but be aware that you are not fully protected from the mutated strain.