Growing Research Indicates Many COVID-19 Cases Might Not be Infectious at All

Elevated ‘cycle thresholds’ may be detecting virus long after it is past the point of infection.

A growing body of research suggests that a significant number of confirmed COVID-19 infections in the U.S. — perhaps as many as 9 out of every 10 — may not be infectious at all, with much of the country’s testing equipment possibly picking up mere fragments of the disease rather than full-blown infections. 

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