McDonald’s U.S. restaurants will require customers to wear masks from August.

McDonald’s announced Friday that from August 1, all customers will be required to wear masks in their U.S. restaurants. “Recent scientific studies suggest that droplets can stay in the air for long periods of time, increasing the risk of transmission of the virus, especially in asymptomatic carriers,” McDonald’s said in a press release. As a result, the centers for Disease Control (CDC) guidelines reaffirm that masks are an effective way to prevent the spread of the new coronavirus. “

McDonald's U.S. restaurants will require customers to wear masks from August.

So far, nearly 82 percent of McDonald’s restaurants are in the state or territory where employees and customers are required to have their faces covered.

McDonald’s added: “The safety of all employees and customers is critical. “

If customers refuse to wear masks, McDonald’s says it will “take additional procedures to handle them in a friendly and quick manner.”

Other big retailers, such as Wal-Mart, Kroger and Starbucks, have asked customers to wear masks in all U.S. stores.

So far this year, McDonald’s shares have been virtually flat, with a market capitalisation of about $152 billion. The company will report its second-quarter results next Tuesday.