Government officials say anti-vaccination advocates have complicated their efforts to turn the tide on an epidemic that has killed at least 63 people, most of them children.
When the rapper T.I. said he has his teenage daughter undergo an annual virginity test, protests arose in the U.S. In fact, the virginity test is a global issue.
The World Health Organization has released the latest data on measles. The increase in cases is notable — and a sign of how much work needs to be done to address the outbreak.
Doctors used to worry that antiretroviral drugs were too powerful for HIV-positive newborns. More evidence is emerging that, in fact, early treatment can be safe and effective.
Forty-eight of the fatalities were children under 4 years old. The number of immunizations plummeted last year after improperly prepared vaccines led to the deaths of two infants.