FILE - In this Sunday, May 24, 2020, file photo, visitors set up inside circles designed to help prevent the spread of the coronavirus by encouraging social distancing at Dolores Park in San Francisco. The city said it would continue to delay the reopening of some businesses because of a surge of infections in the city, where the positive case rate per 100,000 has increased to nearly 8%. The goal is to keep it at around 2%, said Dr. Grant Colfax, director of public health. San Francisco's population of nearly 900,000 people has fared remarkably well during the pandemic, with a total of 4,696 cases and 50 deaths, as of Wednesday, July 15, 2020. (AP Photo/Jeff Chiu, File)
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