The United States has nearly half the world's reported swine flu cases.

Donations fall off as people take vacations, but the demand for transfusions does not lessen.

Some doctors involved in the study have been disciplined by state medical boards, and at least three are convicted felons.

Last year about 600 couches changed hands.

Choosing which treatment or test will work best for a given patient is often a guess.

A recent study raised the possibility the synthetic insulin slightly increases risk of cancer.

The smoking cessation drug has been linked to depression and suicidal thoughts.

It's winter in the southern hemisphere -- prime time for influenza.

Dr. Janet Davison Rowley has improved understanding and led to new cancer treatments.

Government experts say prescription drugs like Vicodin and Percocet that combine a popular painkiller with stronger narcotics should be eliminated because of their role in deadly overdoses.