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June 10 coronavirus news

A pedestrian wearing a protective mask exits Harvard Yard on the closed Harvard University campus in Cambridge, Massachusetts, on April 20.A pedestrian wearing a protective mask exits Harvard Yard on the closed Harvard University campus in Cambridge, Massachusetts, on April 20. Adam Glanzman/Bloomberg/Getty Images

Grocery stores, banks, dentists, universities and big box stores like Walmart should reopen earlier and face fewer restrictions as communities open up after pandemic lockdowns, researchers said Wednesday.

Cafes, gyms, sporting goods stores, bookstores, tobacco and liquor stores should be kept closed until later, they said in a new report.

The researchers taking part in a MIT-led initiative did a cost benefit analysis of 26 different location types to determine what the tradeoff would be between someone’s relative risk of getting infected during a visit and the importance of that establishment in that person’s life and to the economy. 

They used anonymous geolocation data from 47 million mobile phones to track where people went in the US during February and March. They determined how risky a location could be based in part on how much social contact someone would have in that location, how many hours they’d spend there, how crowded it would be, how many visits they’d make, and how many unique visitors they may encounter.

They also factored in visits by people 65 years and older and the distance traveled to the location. They measured economic benefits using US Census statistics and nationally representative consumer survey data.

They found some surprises.

“We find colleges to offer a relatively good trade-off, but most have shut down, leading to a 61% decline in visits,” they wrote in their report, published in the Proceedings of the National Academy of Sciences.

“Conversely, we find liquor and tobacco stores to be relatively poor trade-offs (due to mediocre economic importance and small busy stores), yet the number of visits to this category has declined by less than 5%.”

Some categories were easy — grocery stores have an obvious benefit and museums and movie theaters were of relatively low importance.

“Hardware stores are the location which has seen the largest increase in visits, as individuals scrounge for personal protective equipment and other home supplies,” the researchers noted.

Since many states have had to make reopening and closing decisions in the dark, the researchers hope their work will help policymakers figure out how to reopen the economy safely this time and if there are spikes in cases in particular regions.

This article originally appeared here