Nicoletta Lanese

A yet-unidentified illness has killed 53 people and potentially infected hundreds more in the Democratic Republic of the Congo. The World Health Organization is investigating the outbreak.

An ongoing Listeria outbreak has mostly affected people living in long-term care facilities and people who were already hospitalized prior to becoming sick from the infection.

Learn what happens inside the body during an asthma attack and why treatments help prevent or reverse the effects.

A new report details the bird flu cases of two pet cats in Michigan whose owners work in the dairy industry. Earlier in the month, a data table from the report briefly appeared on the CDC website before being taken down.

"This line of attack in the War on Cancer has had few meaningful outcomes for cancer patients."

A new study draws a line between random genetic mutations and predictable epigenetic changes used to measure biological aging.

A branch of the H5N1 bird flu family tree that hadn't previously been seen in cattle has now been detected in dairy cows.

Scientists are studying the vaginal microbiome in populations all around the world to see how it might differ in different people and in health and disease.

A new study has greatly expanded the number of gene variants thought to be tied to bipolar disorder.

An ongoing tuberculosis outbreak in two Kansas counties has sickened dozens since January 2024.

By modifying 20 regions of the genome, scientists successfully bred mice with two male parents and raised them to maturity.

Female mammals typically carry two X chromosomes — one from each parent — and a new study suggests that the maternal X is linked to faster brain aging.

The FDA will no longer allow red dye No. 3 in foods or ingested drugs, citing evidence that high doses of the dye can cause cancer in male rats. There is no evidence it's carcinogenic in humans.

A new study describes a type of cartilage that may have been discovered, forgotten and found again at several points in history.

A study using lab-made models of the brain suggests that a herpes virus may be a key link between concussions and dementia risk.

The patient in Louisiana who contracted a severe case of bird flu has died, officials announced.

The Los Angeles County Department of Public Health has warned that raw pet food products have tested positive for bird flu and sickened pet cats in the area.

A new study hints at a "previously recognized" mechanism that links a rare chromosomal disorder to schizophrenia.

An initially "unknown" illness affecting hundreds in the Democratic Republic of the Congo may be attributable to malaria, malnutrition and a viral infection. But investigations are ongoing.

Researchers detected flame retardants in household items made from recycled black plastic. The study later received a correction — but regardless of this paper, the chemicals' health effects remain unclear.