Just after 1 p.m. on Tuesday last week, my phone buzzed with a text message from my mother: “Well, came down with cold, aches, cough etc over wknd.” She had taken an at-home coronavirus test. It was positive.Having spent the past year writing about Covid-19 vaccines and treatments for The New York Times, I knew a lot about the options available to people like my mother. Yet I was about to go on a seven-hour odyssey that would show me there was a lot I didn’t grasp.My mother, Mary Ann Neilsen, is fully vaccinated, including a booster shot, which sharply reduced the odds that she would become seriously ill from the virus. But she has several risk factors that worried me. She’s 73. She has …
