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Biden calls for intellectual property waivers on COVID vaccines
U.S. to Place Travel Restrictions on South Africa, Other Countries
By Sheryl Gay Stolberg & Zolan Kanno-Youngs
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WHO skips two letters in Greek alphabet in naming Omicron COVID variant
By Mark Lungariello & Jon Levine
Omicron: South Africa blasts travel bans as hospitals see surge of younger COVID patients.
By Daniel Politi
How variants like omicron develop and what makes them variants 'of concern'
By Jon Schuppe & Chantal Da Silva
Coronavirus: Covid News: Omicron Variant Puts Nations on Alert (Published 2021)
By Isabella Grullón Paz, Nick Cumming-bruce & Jason Horowitz