April 13, 2022

WHO monitoring two new Omicron subvariants

By: Judy Mathias

Editor's Note

The World Health Organization (WHO), on April 11, added two new subvariants of  the COVID-19 Omicron variant to its monitoring list—BA.4 and BA.5, Reuters reports.

WHO is tracking a few dozen cases to assess whether they are more infectious or dangerous than the original BA.1 Omicron variant.

WHO notes that the mutations need to be examined to understand their impact on immune escape potential.


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