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In October 2020, as scientists raced to develop a Covid shot, the head of the WHO warned against looming "vaccine nationalism". But is vaccine inequality the reason behind Omicron's emergence?
South African scientists have discovered a new Covid-19 variant, Omicron, with multiple mutations that is thought to be highly contagious. This is what is known so far about the Omicron variant.
Sudden US backing for a global waiver on patent protections for Covid-19 vaccines offers hope to poor nations struggling for doses -- but big pharma thinks the notion misguided
Fast-spreading coronavirus variants have ignited global concern over whether existing vaccines will be able to protect the world from a virus that is constantly mutating
Europe has passed the grim milestone of one million coronavirus deaths, as the WHO warned that infections are rising exponentially despite widespread efforts aimed at stopping them
The British coronavirus variant has increased transmissibility, but other mutations are provoking concern among scientists who are scrambling to work out if they will still respond to vaccines.