Alexandra Sifferlin @acsifferlin Elizabeth Renstrom—TIMEThe region of the Americas is the first in the world to be declared measles-free, after 22 years of work to banish the highly contagious infection that can result in pneumonia, blindness and death (stock photo) …

The first HIV vaccine trial launched in South Africa Read more »

HIV preventative medicine is doing what it’s supposed to do, even for high-risk populations that aren’t using other forms of protection, according to new research from a health insurer. HIV, which stands for human immunodeficiency virus, can lead to acquired immunodeficiency syndrome, …

A pill designed to prevent HIV is working even better than people thought Read more »