Rebecca Sussman got a coronavirus test because town officials in Bedford, N.Y., encouraged her to. “If you haven’t gotten your test yet, please do so for yourself, your family and our community,” Chris Burdick, the town supervisor, said in an email. More tests would mean a lower positivity rate, he said, and a faster path to reopening. He directed residents to the town’s new testing site, situated on an empty parking lot at the train station.