- Flu season started earlier, more severe symptoms
- CDC saying flu shot is usually between 40 and 60 percent effective
- Primary protection against Influenza B and A (H1N1), not as effective against A (H3N2)
- Possible shot could eliminate need for yearly vaccinations
- As of Feb. 8, Oklahoma is 1 death short of the record number in a season
- Check this story every Thursday for updated flu numbers in Oklahoma
National reports indicate this year's flu season is starting earlier, and the symptoms are more severe than normal.
In Oklahoma, the virus killed 129people across the state.
Chart: Current flu numbers in Oklahoma
The flu vaccine is typically effective at reducing the illness for between 40 and 60 percent of the population each season, according to the CDC, and this year, it is most effective against influenza B and influenza A(H1N1), but less effective against Influenza A (H3N2).
As researchers try to make flu shots more effective, some are trying to make a universal shot that could erase the need for annual shots:
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