One unanswered question about this winter's flu epidemic was whether the vaccine that Americans were clamoring to get would protect against the predominant Fujian strain. We may have the answer. A preliminary CDC study of 1,818 Colorado hospital workers suggests the vaccine had "no or very low effectiveness"--from 3% to 14%--against the Fujian flu.
To continue reading:
Want the full story?
Get TIME the way you want it
Week Digital Pass — $4.99
Pay-As-You-Go DIGITAL ACCESS — $2.99
Year ALL ACCESS — Just $30! Best Deal!
Print Magazine + Digital Edition +
Subscriber-only Content on TIME.com
Learn more about the benefits of being
a TIME subscriber
If you are already a subscriber sign up — registration is free!