Chicago’s mayor issued a month-long stay-at-home advisory, and Detroit’s public schools called a halt to in-person instruction to curb the spread of the coronavirus as more than a dozen U.S. states reported a doubling of new Covid-19 cases in the last two weeks.

The United States reported a record increase in coronavirus cases for a fourth consecutive day with at least 131,420 new infections, bringing the country’s total caseload to about 9.91 million, according to a Reuters tally.

U.S. coronavirus infections surged by at least 129,606, according to a Reuters tally, the third consecutive daily rise of more than 100,000 cases as a third wave of Covid-19 sweeps the United States.

The United States set a one-day record for new coronavirus cases with at least 102,591 new infections and as hospitals in several states reported a rising tide of patients, according to a Reuters tally.

The number of new Covid-19 cases in the United States last week rose 24% to more than 485,000 while the number of tests performed rose 5.5%, according to a Reuters analysis of state and county reports.

Covid-19 shattered records for new cases in the U.S. Midwest, straining hospitals, and will darken New York’s Broadway theaters until June, a decision the Actors’ Equity Association union called “difficult but responsible.”

Nine U.S. states reported record increases in Covid-19 cases over the last seven days, mostly in the upper Midwest and West where chilly weather is forcing more activities indoors.

The number of tests coming back positive for Covid-19 is topping 25% in several states in the U.S. Midwest as cases and hospitalizations also surge in the region, according to a Reuters analysis.

U.S. cases of the novel coronavirus surpassed six million as many states in the Midwest reported increasing infections, according to a Reuters tally.

The medical cannabis market in the United States, even with all of its restrictions, continues to be a fertile area not only for dispensaries, but pharma companies developing cannabis-derived drugs; and proponents say further growth can be generated by educating physicians about medical cannabis.