A man unwittingly picked up a parasite, and years later, it triggered a throat infection.
An omicron subvariant called EG.5 has become the most prevalent version of SARS-CoV-2 in the U.S. by a narrow margin, according to CDC estimates.
Come fall, a new antibody drug should be available to protect U.S. newborns and infants younger than 8 months from severe RSV infections.
An upcoming resupply mission to the International Space Station will include stem cells destined to be grown into tiny, 3D models of the human brain.
A man entered long-term remission from HIV after a stem cell transplant, but unlike in previous, similar cases, the patient's transplant donor did not carry an HIV-resistant gene variant.
A teen with dystrophic epidermolysis bullosa, or "butterfly disease," was legally blind but has now had his sight restored with gene therapy.
A review of data from thousands of people in 25 countries finds that people taking HIV medicine have "almost zero risk" of spreading the virus via sex once their levels are low.
A clinical trial suggests that the MIND diet, which is intended to guard against dementia, offers little benefit over a standard diet in the short term.
As anticipated, an arm of the World Health Organization has said aspartame is a "possible carcinogen" — but does that label mean much?
The U.S. Food and Drug Administration approved the nation's first over-the-counter birth control pill after recently being advised to do so by a panel of experts.
Sources told Reuters that the International Agency for Research on Cancer, an arm of the World Health Organization, will soon name aspartame a "possible carcinogen." But historically, the agency's decisions have been controversial and confusing.
Four people in Florida and one person in Texas recently caught malaria within the U.S. Similar cases haven't been reported since 2003.
A declassified U.S. intelligence report further refutes the idea that SARS-CoV-2 "leaked" from the Wuhan Institute of Virology.
Sunrise Growers Inc. has issued a voluntary recall of certain frozen fruit products due to potential Listeria contamination.
In a first, U.S. regulators have cleared several lab-grown chicken products for sale in the country.
The American Medical Association released a new policy on how doctors should use body mass index (BMI), acknowledging the metric's inherent flaws.
Two children developed insatiable hunger and severe obesity due to rare genetic mutations, their doctors reported.