Illinois, Indiana, Michigan, Minnesota, Ohio and Wisconsin had the highest rates, with 9.2 percent of tests coming back positive.

Twenty states (plus D.C.) had "very high" levels of the virus present in wastewater, an increase from 16 states the week before.

Most people now have some degree of immunity to COVID, either from vaccination or infection, Schaffner said. The data on how ...

Challenge trials help researchers study immune responses. Skeptics still doubt the approach is worth the risks ...

In two recent papers, Professor Christopher Avery investigates the interplay between individual decision-making, social ...

Dr. Carla Garcia Carreno, Children's Medical Center Plano director of infection prevention and control, is already seeing upticks in RSV, COVID and flu in her area, she told CBS News. And a late ...

A study found that patients with COVID-19 may have a higher risk of developing new gastrointestinal (GI) disorders compared with matched controls, highlighting the need for further research on ...

But the report, on the experiences of 13 patients, found that the drug had no benefit for some people and that some who benefited said the improvement didn’t last. By Pam Belluck Pam Belluck has ...

Vaccination against COVID-19 reduces the incidence of hospitalization or death and the development of severe disease among ...

COVID-19 infection is not associated with immediate changes in multiple sclerosis (MS) symptom severity or disability, according to a study published online Dec. 23 in Neurology. Amber Salter ...