Swallowing and talking had become excruciating for the young woman, and her symptoms were progressing quickly.
“My symptoms are back,” the 32-year-old woman texted to her brother. “Woke up with a swollen tonsil and a hard time swallowing.” Her brother, nine years older and a physician, sat up in bed. It was 10 p.m. West Coast time, where he was, and 1 a.m. in... [1831 chars]

