Hallie Levine July 20, 2022 New Yorker Lyss Stern came down with COVID-19 at the beginning of the pandemic, in March 2020. She ran a 103-degree fever for 5 days straight and was bedridden for several weeks. Yet symptoms such as a persistent headache and tinnitus, or ringing in her ears, lingered. “Four months later, I still couldn’t walk...