Many people have concerns over the effectiveness of the flu shot, as well as the possible hazards and side effects associated with the vaccine.
A Pennsylvania nurse who had some concerns says she was fired because she refused to get a flu shot.
Dreonna Breton says she didn't get the shot over fears it could cause a miscarriage.
The 29-year-old mother of one says she submitted letters from her doctors supporting her decision.
But she said Horizons Healthcare Services in Lancaster threatened her with termination if she didn't get the shot.
Breton cites limited studies on the impact of flu vaccines on pregnant women.
"There are risks of getting the flu during pregnancy. I know that as well. I did my research on that as well; but the unknowns of the flu vaccine were more risky for me it was more overwhelming for me to put my body through that and potentially harm my child than the risks of the flu, so that's the decision that we made as a family and felt very comfortable with," she said.
Breton says she's not planning to sue the hospital, but she wants them to change their policy on vaccines for pregnant employees.
A hospital spokesperson said it's unconscionable for a health care worker not to get an immunization and that pregnant women are more susceptible to the flu.
The Centers of Disease Control and Prevention (CDC) advises that all health care professionals get vaccinated and getting a flu shot while pregnant is the best protection for pregnant women and their babies.
All vaccines come with possible side effects. It's important to weigh the risk of the disease versus the risk of vaccine side effects. The CDC says last year's flu shot was only 56% effective at preventing the flu.
It's too early to determine the effectiveness of this year's vaccine.