Less than half of America get an annual flu shot, CBS reports, and the reasons why vary with race.

Only 41 percent of black adults in the United States get the seasonal flu shot, compared to 47 percent of white adults, according to the US Centers for Disease Control and Prevention.

The researchers explored differences in flu vaccination rates among American adults, analyzing survey responses from 800 white people and an equal number of black people. The surveys were completed after flu season had peaked.

Those who chose not to get vaccinated against the seasonal flu believed the side effects associated with the shot were worse than the virus itself, the study revealed.

Some white people opted against a flu shot because they didn’t think the flu was a “big deal.” On the other hand, many black people were concerned about the vaccine’s safety, the researchers found.

Read more at www.cbsnews.com