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Dennis Perrotta, a retired state epidemiologist, went to the Spurs-Mavericks game on March 10 in San Antonio. He’s had partial season tickets for about the last 10 years and makes a 200-mile round trip from his ranch in Bastrop County to the AT&T Center every few weeks.That night the sports fan in Perrotta was having a good time: The Spurs beat the favored Mavs, a high note in a lackluster season. But the public health expert in Perrotta was starting to worry. He was inches away from other fans who were touching each other while yelling and cheering. “When I came home,” Perrotta said, “I talke…
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