Health officials say further research has not found a miscarriage risk for women who get annual flu shots.
Two years ago, a puzzling study found women who had miscarriages between 2010 and 2012 were more likely to have had back-to-back annual flu shots. So experts urged more research.
This week, Centers for Disease Control and Prevention officials said a larger and more rigorous study found no link over three subsequent flu seasons.
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