In the 2017-2018 flu season, just half of pregnant women said they got a flu vaccine before or during their pregnancy, a CDC report found.
More than 80,000 people died, and an estimated 900,000 people were hospitalized from flu-related complications during last year's flu season.
Women who said a provider offered them a flu vaccine were more likely to get one. Just over 54 percent of pregnant women were vaccinated for tetanus, diphtheria and pertussis, the report found.
"Providers are encouraged to strongly recommend vaccines that their patients need and either administer needed vaccines or refer patients to a vaccination provider," the CDC said.