Updated March 31, 8:25 p.m. ET

A few months ago, it may have seemed silly to wear a face mask during a trip to the grocery store. And in fact, the mainline public health message in the U.S. from the Centers for Disease Control and Prevention has been that most people don't need to wear masks.

But as cases of the coronavirus have skyrocketed, there's new thinking about the benefits that masks could offer in slowing the spread. The CDC says it is now reviewing its policy and may be considering a recommendation to encourage broader use.

With tests scarce, epidemiologists are looking at hospitalizations as an indicator of how the novel coronavirus is spreading. But in some of the areas of the country worst-hit by COVID-19, states and counties aren't releasing that data.

The result is an incomplete picture of where the pandemic is surging, even in hotspots such as Washington and California.

In New York City, emergency hospital beds are multiplying — inside tents set up in Central Park, on a hospital ship docked on Manhattan's West Side and in the Javits Convention Center, which now houses about 1,000 beds.

The seaside town of Llandudno in northern Wales has gone quiet during the coronavirus crisis, like so many other communities around the globe. The streets are mostly deserted, except for one daring crew who are wandering around the shuttered storefronts.

Michigan now ranks third in the country for coronavirus-related deaths, trailing only New York and New Jersey, after the Midwest state on Tuesday reported a new surge of cases.

State officials confirmed another 1,117 cases, bringing the coronavirus tally in Michigan to 7,615.

Officials on Tuesday said the virus claimed the lives of 75 more people, pushing up the number of COVID-19 fatalities to 259.