New evidence showing the delta variant is as contagious as chickenpox and may be more dangerous than other versions has prompted U.S. health officials to consider changing advice on how the nation fights the coronavirus, internal documents show.

The Biden administration announced Thursday it will allow a nationwide ban on evictions to expire Saturday, arguing that its hands are tied after the Supreme Court signaled the moratorium would only be extended until the end of the month.

The Centers for Disease Control and Prevention changed course Tuesday on some masking guidelines, recommending that even vaccinated people return to wearing masks indoors in parts of the U.S. where the delta variant of the coronavirus is fueling infection surges.

The United States is in an “unnecessary predicament” of soaring COVID-19 cases fueled by unvaccinated Americans and the virulent delta variant, the nation’s top infectious diseases expert said Sunday. 

The U.S. Centers for Disease Control and Prevention says the risk of COVID-19 is low if you’re fully vaccinated, and that you can resume indoor and outdoor activities without wearing a mask or social distancing.

Eight people have been infected with salmonella typhimurium, with illness starting on dates ranging from June 10 to June 15, according to the Centers for Disease Control and Prevention. 

The infected mosquitoes were found in the O’Hare and Beverly community areas, according to the Chicago Department of Public Health.

The delta variant, a more transmissible and possibly more dangerous strain of coronavirus, now makes up more than half of all new COVID-19 infections in the U.S., according to estimates from the U.S. Centers for Disease Control and Prevention.

The more transmissible delta variant is expected to become the dominant coronavirus strain in the U.S., the director of the Centers for Disease Control and Prevention said. And with half the U.S. still not fully vaccinated, doctors say it could cause a resurgence of COVID-19 in the fall.

The Centers for Disease Control and Prevention says the agency is tracking the Delta coronavirus variant, among others — and warned that there is a small chance a fully vaccinated person could still get infected if they’re exposed.

The Biden administration on Thursday extended the nationwide ban on evictions for a month to help millions of tenants unable to make rent payments during the coronavirus pandemic,  but said this is the last time it plans to do so. 

The U.S. government is stepping up efforts to get younger Americans vaccinated for COVID-19 as concerns grow about the spread of a new variant that threatens to set the country back in the months ahead.

Dozens of different at-home COVID-19 tests are now available from big-box retailers and pharmacies. But before you run out and buy one, a few words of caution from Dr. Emily Landon, an infectious disease specialist at UChicago Medicine.

A new analysis of blood samples from 24,000 Americans taken early last year is the latest and largest study to suggest that the new coronavirus popped up in the U.S. in December 2019 — weeks before cases were first recognized by health officials. 

The Centers for Disease Control and Prevention reports the COVID-19 vaccine can cause swelling in the lymph nodes in the underarm where women received the shot, which the agency says is normal. But that swelling can appear in mammograms. Here’s what you need to know. 

The government’s new guidance on masks for vaccinated people has left some Americans confused and sent businesses and states scrambling to adjust their rules.