Starbucks Corp. has instructed employees to step up cleaning at its thousands of U.S. cafes, as a domestic restaurant industry already working against stagnant demand reacts to a new threat to sales and public health.

The coffee giant and McDonald’s Corp. are among restaurant chains adjusting operations and stepping up cleaning as the coronavirus epidemic gains ground in the U.S. More than 130 cases of the new coronavirus had been diagnosed across the U.S. as of Wednesday.

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