Organ transplant waiting lists are designed to fairly distribute organs to the sickest patients in order of priority. Or so we thought. A New York Times investigation shows that the list leaves many patients waiting for organs despite being next in lin...

The Demographic and Health Surveys were the only sources of reliable information in many countries on metrics such as mortality, nutrition and education.

The cancellation plays into fears among scientists who worry that Robert F. Kennedy Jr. will use his position as health secretary to sow doubts about vaccines.

At least 124 cases have been reported since late January, mostly among children and teenagers who were unvaccinated or whose vaccination status was unknown.

Amazon is aiming to catch up in generative artificial intelligence and to reboot its virtual assistant, which has been leapfrogged by powerful chatbots.

Republicans have proposed lowering the federal share of costs for Medicaid expansions, which could reshape the program by gutting one of the Affordable Care Act’s major provisions.