ATLANTA (November 25, 2013) A new study concludes that while the whooping cough vaccine may keep people from getting sick, it doesn't prevent them from spreading the disease.
Whooping cough is a highly contagious disease that’s most dangerous to children.
Last year was the nation's worst year for whooping cough in six decades, and some studies have suggested that a newer version of the vaccine doesn't last as long as the old one.
The new research tested the vaccine in baboons.
They didn't get sick but still may have been contagious for five weeks.
The study was published Monday in the journal Proceedings of the National Academy of Sciences.