WHO says it is monitoring a new Covid variant called ‘mu’
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WHO says it is monitoring a new Covid variant called ‘mu’

The World Health Organization is monitoring a new coronavirus variant called “mu,” which the agency says has mutations that have the potential to evade immunity provided by a previous Covid-19 infection or vaccination. Mu — also known by scientists as B.1.621 — was added to the WHO’s list of variants “of interest” on Aug. 30, the international…