The flu vaccine turned out to be a big disappointment again.
The vaccine didn’t work against a flu bug that popped up halfway through the past flu season, dragging down overall effectiveness to 29%, the U.S. Centers for Disease Control and Prevention reported Thursday.
The flu shot was working well early in the season with effectiveness put at 47% in February. But it was virtually worthless during a second wave driven by a tougher strain, at just 9%.
Read this story now for free
To continue reading, sign up for our newsletter and get unlimited access to WABE.org
You can select your preferences for news and local content. We will never share your email address. Learn how your newsletter sign-up will support WABE and Public Media
