Geneva (AFP) – The World Health Organization Tuesday warned Omicron was spreading at an unprecedented rate and urged countries to act as drug maker Pfizer said its coronavirus pill was effective against the variant. Dutch primary schools will close early as Europe battles a fresh wave of infections and hospital admissions, while British Prime Minister Boris Johnson faced a major parliamentary test seeking to impose fresh Covid curbs. Omicron, first detected by South Africa and reported to the WHO on November 24, has a large number of mutations, setting alarm bells ringing since its discovery. …

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