VIRUS TODAY: Massachusetts nurses go on strike over staffing

Here's what's happening Monday with the coronavirus pandemic in the U.S.:

THE NUMBERS:

VACCINES: More than 60 million people, or 18.1% of the U.S. population, have received at least one dose of a coronavirus vaccine, according to the Centers for Disease Control and Prevention. Some 31.2 million people have completed their vaccination, or 9.4% of the population.

CASES: According to data from Johns Hopkins University, the seven-day rolling average for daily new cases in the U.S. decreased over the past two weeks, going from 66,162.4 on Feb. 21 to 57,971.5 on Sunday.

DEATHS: According to data from Johns Hopkins University, the seven-day rolling average for daily new deaths in the U.S. decreased over the past two weeks, going from 1,873 on Feb. 21 to 1,677.1 on Sunday.

POSITIVITY RATE: The seven-day rolling test positivity rate in the U.S. decreased from 4.9% on Feb. 21 to 4.1% on Sunday, according to data from the COVID Tracking Project. The three states with the highest rates of positive coronavirus tests: Idaho (25.9%), Alabama (19.6%) and Iowa (18.1%). Idaho’s rate rose in the past two weeks from 19.91% on Feb. 21 to 25.89% on Sunday.

THREE THINGS TO KNOW TODAY

— Hundreds of nurses at a Massachusetts hospital walked off the job after failing to reach an agreement with Dallas-based Tenet Healthcare over staffing levels. Nurses and their supporters gathered outside St. Vincent Hospital in Worcester at dawn Monday holding signs that said “Safe Staffing Now” and “Picketing for our Patients and our Community.”

— One year into the pandemic, Nevada Gov. Steve Sisolak is still attempting to strike the right balance between keeping the state’s tourism industry afloat while also containing the coronavirus. Sisolak said in an interview with The Associated Press...