On an average Influenza killed nearly 23,607 people every year from last three decades, a U.S. study found. Influenza is quickly spreading virus and moreover severity of the season are based on the which strains are circulating .And study also reveals that annual deaths caused due to flu had been ranged from 3,349 to 48,614 people. Latest H1N1 virus, which had been into act last year, had lead to death of nearly 13,000 people mainly on children and younger people.

Researchers had published in the CDC’s Morbidity and Mortality Weekly Report “demonstrates the substantial variability in mortality estimates by year, influenza virus type/subtype, and age group.” Future research that considers years- of-life lost is needed to better communicate the mortality burden of influenza in these younger populations”

The first ever disease infecting every one out of five Americans and spread on the earth at unbelievable rate. It mainly effects young people according to the CDC. Every year people who die because of flue were 90 percent older people. But this year it was totally reverse, older people are having some immune against swine flu than younger one.

Thus in this manner flu is shaking the world like anything.