Judy Dodd, a teacher from New York, was a COVID-19 long hauler, having never recovered after being diagnosed with the virus in April. Then she got the Pfizer vaccine, and after a miserable three weeks, she got a second dose. And with it came the unthinkable: she began to feel better. “I hadn’t felt that good in almost a year. The transformation was unbelievable!” she said. Doctors are following this phenomenon of long haulers being seemingly cured after getting the vaccine, but questions remain.