The latest news on public health
New analysis says H1N1 flu's spread is similar to that in big 20th-century pandemics.
The United States has had a measured response to spread of the H1N1 virus.
Current phase of alert in the WHO global influenza preparedness plan.
An interactive that maps confirmed cases of swine flu around the globe
No borders to close against this disease.
Officials weigh the impact of shutting subways, like Washington's Metro, if the flu outbreak worsens.
With a flu pandemic imminent, it's important to know who's actually infected.
Parents need to start figuring out how to deal with school closures.
Democrats blasted Republicans for mocking a stimulus spending proposal for pandemic flu defenses.
Epidemiologists go straight to the source, then sift their data one clue at a time.