Farmers often use fire to clear agricultural fields, but the practice adds to air pollution. Here, a man tends a fire in a Louisiana field. Credit: Chloe Gao

An experimental malaria vaccine protected healthy subjects from infection with a malaria strain different from that contained in the vaccine, according to a study published today in the Proceedings

Salmonella infections are typically the culprit behind food poisoning outbreaks, but in sub-Saharan Africa, they often cause drug-resistant, deadly bloodstream infections and meningitis.

A new study from Washington University in St.

The spread of superbugs that are resistant to all known drug treatments could spark a global financial crisis on the level of the 2008 meltdown or worse, a World Bank-led study warned on Monday.

The World Health Organization on Monday certified Sri Lanka as a malaria-free nation, in what it called a "truly remarkable" achievement.

The world is in the grip of a global crisis that kills the equivalent of the populations of Philadelphia, Kampala or Prague - around 1.6 million each year.

Nigeria on Sunday celebrated two years without a new case of polio, in a major stride towards Africa being declared free of the devastating disease.

Ebola and Marburg filovirus disease outbreaks have typically occurred as isolated events, confined to central Africa.

Efforts to end the global AIDS pandemic by 2030 are lagging, the UN warned Tuesday, decrying rising numbers of new HIV infections among adults in many regions, with Russia especially hard-hit.