Theeffectivenessof this year's influenza vaccine was lower in South America than last season, the Centers for Disease Control and Prevention reported Thursday, which might be a clue to how much protection theshotscould offer people in the U.S. this winter. Vaccine effectiveness was 34.5%...
Flu vaccine efficacy against hospitalization may be lower this season: CDC Early estimates on the effectiveness of this year’s flu vaccines indicate they may be less effective at preventing hospitalization than in years past, based on data from South America, where the annual flu season occurs ea...
More data could come soon. The first estimates from CDC's influenza vaccine effectiveness studies for this season are expected to be released by the end of this month. The World Health Organization is also expected to release a report soon from a meeting to decide next season's influenza vacc...
Flu vaccine effectiveness in past seasons has ranged between 40 percent and 60 percent when components of most circulating viruses are "antigenetically like" those in a recommended vaccine, the report says. Effectiveness this season has been higher for children between the ages of 6 months and...
Da Hee HanPharmD
Theeffectiveness of the flu vaccinefluctuates greatly from year to year -- as low as 19% efficacy in the 2014-2015 season to as high as 60% in 2010-2011. Last year, when abouthalf of US adults and childrengot a flu shot, the vaccine was 39% effective in preventing infection...
Hospitalization rates are at a decade high, she said, for cases typically seen at this time of year. A vaccination effectiveness (VE) studypublishedtoday inMorbidity and Mortality Weekly Reportshows that flu vaccines were 36% effective overall against influenza A and B, which means a vaccinated ...
Focus on treatment is important because in past seasons, A(H3N2) has been linked with more deaths and hospitalizations in people aged 65 years and older and young children than in other groups. Also, this year's vaccine effectiveness may be as low as last year's, at 32% for A(H3N2),...
It's important to know that each year the flu vaccine is never 100% effective in preventing flu. Vaccine effectiveness varies from year to year, based on the match of the circulating flu types to the strains contained in the vaccine. ...
Researchers work to improve effectiveness of flu shots 02:33- Source:CNN CNN— Getting the flu vaccine this year is important, experts at the World Health Organization said during a news briefing in Geneva on Tuesday. It appears that the circulation of flu in the Southern Hemisphere – which ...