Study: Flu shot critical for those with heart disease

A public health nurse demonstrates drawing flu vaccine from a bottle at the Oklahoma City-County Health Department in Oklahoma City, Thursday, Jan. 10, 2013. Flu season in the U.S. has struck early and, in many places, hard. (AP Photo/Sue Ogrocki)

October 22, 2013 6:36:22 PM PDT
If you have heart disease, a flu shot is especially critical, according to a new study.

Researchers at the University of Toronto looked at patients with coronary disease and found that those who had gotten a flu shot had a lower risk of heart problems.

A circulatory system that's already weakened by cardiovascular disease does not stand up to the flu well.