Recently, Dr. June McKoy, associate professor of medicine at Northwestern University Feinberg School of Medicine, was sitting on a CTA bus when a masked man asked if he could sit on the seat next to her. It was the first time since the pandemic that she had been faced with a non-distanced seating request, and it startled her for a moment. She asked if he’d been vaccinated. He said yes, and she said yes. “I took a chance,” she said, that he was telling the truth.