- CDC figures show that the flu vaccine is effective this season 47%
- The predominant strain of the influenza virus this year ̵
The current flu season was more than last year, when the vaccine protected about half of the people who were vaccinated and less pronounced strain of the virus, causing the majority of ailments
However, there were more deaths, than usually from this lighter strain, and there is evidence of a more severe strain of the influenza virus
Current the influenza season began in early October and lasts until May. As of February 2, between 13.2 million and 15.2 million people around the country found the flu reported to the Centers for Disease and Control. To date, it has died from 9,600 to 15,900.  CDC said that the flu is usually killed from 12,000 to 56,000 people in the United States a year.
"The number of deaths we see is a bit surprising ", said CDC epidemiologist Brendan Flannery for the Wall Street Journal.
(MORE: FDA Approves New Flu Treatment )
This year's vaccine, formulated for the H1N1 influenza virus strain, is 47% effective so far, the CDC also said. Last year, the vaccine was 36 percent effective at the same time of the season. In general, the vaccine for 2017-2018 was 40 percent effective over the season, ten percent is the H3N2 strain that prevailed in the past season
This season, 186 Many people have been hospitalized with the flu and most of them have a H1N1 flu.
Dr. William Shaffner, an infectious disease specialist at the University of Vanderbilt, told the AP that it was unusual and it was not clear why this happened. does not necessarily reflect the position of our parent company, IBM