Toxoplasma is arguably the most successful animal parasite on earth: It infects hundreds of species of warm-blooded animals, most notably half of humanity.

Patients fighting infections may be taking wrong fever-reducing drugs

A series of studies published by The Lancet medical journal say, "Worldwide, the burden of disability and premature death due to sexual and reproductive health problems is enormous and growing."

While investigating a fungus known to cause an infection in people with AIDS, two grantees of the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), unexpectedly discovered a potential strategy for treating metastatic melanoma, one of the deadliest forms of skin cancer.