Less than half of Americans plan to get COVID or flu vaccines this year, survey findsTheeffectivenessof 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 the...
Vaccine effectiveness “might be similar in the Northern Hemisphere” if similar flu viruses circulate, according to the federal health agency. Who Should Take the Flu Vaccine? Is it safe for babies, pregnant people, and elderly people to get the flu vaccine? How well the vaccine works in Sou...
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. Results from the 2023-2024 U.S. flu season show that ...
The CDC began regularly tracking the effectiveness of the flu vaccine during the 2004-2005 season, but the results for the first few years were from smaller studies and are considered less reliable. Effectiveness has ranged from 47 percent to 60 percent in the last half-dozen years, when studi...
The flu vaccine has been 68% effective at preventing hospitalizations in children but has been less protective for seniors this season,according to preliminary data released Wednesdayby the Centers for Disease Control and Prevention. The vaccine was 35% effective at preventing hospitalization for s...
One reason this season has been so challenging is that the A(H3N2) viruses have been linked to more severe illnesses. In recent weeks, more B viruses and H1N1 viruses have been circulating, for which the vaccine is somewhat more effective. Specifically, the vaccine is 67% effective against ...
Da Hee HanPharmD
This season'sinfluenzavaccine effectiveness is 45% overall and 55% in children, according to preliminary estimates from the Centers for Disease Control and Prevention (CDC). Vaccine effectiveness (VE) was higher against influenza B/Victoria (50%) and considerably lower against influenza A(H1N1)pdm...
The vaccine's efficacy isn't as high as it could be, though. In recent years its effectiveness has ranged between about 20% and 80%, said Mark Davis, Ph.D., professor of microbiology and immunology and the Burt and Marion Avery Family Professor of Immunology. ...
While effectiveness looks good for this season, Ellington warned that declining vaccinationratesmeans the U.S. could still see fewer hospitalizations and deaths prevented by vaccinesthis season. "To prevent flu hospitalizations and deaths on the population level, we need both good vaccine effectiveness...