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08 Jan 2022 By theguardian
Despite being as cautious as possible in the run-up to Christmas, Roberts, who lives in Sydney, tested positive for the virus in mid-December. She still does not know if it was the Delta or Omicron variant.
Moy and Martiniuk say that there is not yet conclusive data on how much protection a previous Covid-19 infection, Omicron or otherwise, offers, against future Omicron infections, or other variants.
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