But the good news is that it works better in kids.
That's better than initial reports from Australia and Canada had indicated. This year's mix shows better protection against other now circulating strains of influenza, such as H1N1, than it does against H3N2. ILI, or influenza-like illness, rose to a 7.7 percent increase, the most since the 2009 H1N1 pandemic, or swine flu.
Adults with flu can spread the virus one day before symptoms appear to approximately one week after.
Totally preventing flu is not the only goal of vaccination: It also can reduce the severity of flu symptoms for people who do get sick, Monto said.
Kansas City announced a finalist for NFL Draft
After hosting the Super Bowl this year, Minnesota will have to wait a while before hosting a major National Football League event. The winning cities will be announced during the NFL league meetings May 21-23.
Of those who did have influenza, 43 percent had been vaccinated. Most of the children had not been vaccinated, according to a CDC study. Nationwide, there have been at least 63 pediatric flu-related deaths since October 1.
Forty-six of the 50 states, the District of Columbia, New York City and Puerto Rico have been experiencing high levels of influenza-like illness during the week ending February 3, the CDC reported. That data will come later. But experts have wondered whether low vaccine effectiveness is another reason for the surprisingly severe season hitting the United States this winter. It protected an estimated 67 percent of people who got it from flu bad enough to go to the doctor. The decision is made months in advance, when it is hard to know what strains will be circulating.
Each year, health officials must choose the three or four influenza strains that vaccine makers should target for an upcoming season. "Let me say that again - the flu vaccine is safe", said U.S. Surgeon General Jerome Adams.
Against these two less-prevalent flu strains, the vaccine earned higher marks of effectiveness.
"Some protection is better than no protection at all".
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Recent research suggests that the traditional production process may make flu vaccines less effective, especially for H3N2.
"There is still time". In addition to getting a flu shot, people should frequently wash their hands and surfaces such as door knobs, light switches, counter tops, remotes, cell phones and computers.
The flu vaccine is doing a poor job protecting older Americans and others against the bug that's causing most illnesses. People who think they may have the flu should call their health care provider for advice and possible treatment. People's response to flu, he said, seems to be primed by the first type of flu we encounter as children.
Health and Human Services Secretary Alex Azar, flanked by officials including the surgeon general, the head of the Food and Drug Administration and the acting head of the CDC, noted that he, his wife and children had been vaccinated and said "so has President Trump".
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One of the report's author's, Andrew Hood - a senior IFS research economist - said soaring house prices were part of the problem. As a outcome , those born in the late 1980s are much less likely to be able to buy their own homes.