
New study links long COVID to about 1 in 6 after infection
A Massachusetts General Hospital–led analysis of 457,950 COVID-19 patients across four regions found 74,560 long-COVID cases (16.3%), equating to roughly 15 million Americans. About 89.3% of those patients developed at least one chronic condition, and prevalence rose through mid-2024, indicating current code-based surveillance likely undercounts the burden. The study also noted regional differences in symptom patterns (e.g., thyroid issues in New England vs metabolic abnormalities elsewhere) and called for better surveillance, tailored treatments, and coordinated care to address the diverse manifestations of PASC.













