The gut bacterium Bacteroides fragilis has long presented researchers with a paradox. It has been associated with colorectal cancer, yet it also lives quite happily in most healthy people. A study by ...

A severe, Ebola-like illness native to West Afria is an unrecognized threat with global implications—and imported cases have already been detected in the U.S.—experts have warned. The researchers have ...

Human metapneumovirus is a virus that infects the nose, throat and lungs, according to the Mayo Clinic. For most people, the ...

In a cave in Romania, scientists found a bacterial strain entombed in ice that is resistant to 10 modern antibiotics. But it may also help fight superbugs.

A bacterium prevalent in sinus infections and pneumonia may aggravate Alzheimer’s disease, according to a recent study published in Nature Communications. The bacterium, Chlamydia pneumoniae, was ...

Researchers have identified bacterial biofilms within calcium oxalate kidney stones, the most common type, challenging the established view that these stones are sterile and noninfectious and raising ...

Scientists have uncovered an intriguing link between infection and brain health, finding that a common bacterium in the eye appears to be linked to cognitive decline and Alzheimer’s disease. It's the ...

A microbe involved in gum disease could fan the flames of breast cancer. In mice, the oral bacterium can swell the size of existing tumors and even spark the formation of precancerous growths, ...

It’s long been thought that only an unusual type of kidney stone has any connection to bacteria, and that the vast majority of kidney stones, which are caused by calcium oxalate crystals, don’t host ...

Study led by Union Square Medical Associates finds ongoing infection despite antibiotic treatment. When patients remain ill after antibiotic therapy, clinicians need to consider the possibility of ...

A University of California, Riverside team of scientists has found that Toxoplasma gondii, a common parasite affecting up to one-third of the global population, is far more complex than previously ...

A 5,500-year-old skeleton from Colombia has revealed the oldest known genome of the bacterium linked to syphilis and related diseases. The ancient strain doesn’t fit neatly into modern categories, ...