Hong Kong confirmed three imported Covid-19 cases carrying mutations on Wednesday, including two people who were fully vaccinated.
All were found to have the L452R mutation, which is linked to the more infectious Delta variant.
One of the vaccinated had received two shots of the BioNTech vaccine, and the other one had also been vaccinated with two doses of the Russian-made Sputnik V jab. Both received their second shots in April, making them fully vaccinated.
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