Emer Cooke, EMA director

Covid-19 roundup: Old test sam­ples sug­gest Omi­cron has been in Eu­rope for weeks; US to tight­en trav­el re­stric­tions  — re­port

Look­ing at past test sam­ples, Dutch of­fi­cials have de­tect­ed the Omi­cron vari­ant in cas­es dat­ing back as far as Nov. 19 …

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