Showing posts with label Epidemic Rate. Show all posts
Showing posts with label Epidemic Rate. Show all posts

Sunday, 12 August 2012

Whooping Cough-Epidemic Rate-Alarming Rate

CDC: Whooping cough rising at alarming rate in US

The U.S. appears headed for its worst year for whooping cough in more than five decades, with the number of cases rising at an epidemic rate that experts say may reflect a problem with the effectiveness of the vaccine. read more..