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AI Flags 10 Million Undiagnosed Long COVID Cases, Experts Question Accuracy

6/2/2026

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Summary

Story summary

AI analysis of 460,000 records identified ten million undiagnosed long COVID cases in the U.S.
Mass General Brigham estimated that about 16 % of COVID-19 patients—roughly ten million Americans—develop long COVID.
Dr. Ziyad Al-Aly of Washington University said the study lacks key controls and likely overstates prevalence.
Beth Pollack of MIT and Dr. Sandeep Jubbal said long COVID is an illness that impairs life and causes fatigue without a test.

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Story summary

AI analysis of 460,000 records identified ten million undiagnosed long COVID cases in the U.S.
Mass General Brigham estimated that about 16 % of COVID-19 patients—roughly ten million Americans—develop long COVID.
Dr. Ziyad Al-Aly of Washington University said the study lacks key controls and likely overstates prevalence.
Beth Pollack of MIT and Dr. Sandeep Jubbal said long COVID is an illness that impairs life and causes fatigue without a test.