Margaret Keenan, 90, the first patient in the United Kingdom to receive the Pfizer/BioNtech covid-19 vaccine, speaks with Healthcare assistant Lorraine Hill as she prepares to leave University Hospital Coventry & Warwickshire, the day after receiving the first of two doses of the vaccine, on December 9, 2020 in Coventry, United Kingdom. The UK is the first country in the world to start vaccinating people with the Pfizer/BioNTech jab. Jonny Weeks/The Guardian – Pool/Getty Images

Pfizer-BioNTech’s COVID-19 vaccine produces a weakened immune response against the variant found in South Africa, a study suggests.

The vaccine produced two-thirds less neutralizing antibodies against a lab-made virus designed to mimic the variant.

The study’s author said that the vaccine will

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