Boris Johnson Warns Against ‘Over-Optimism’ Over Vaccine Roll-Out

Boris Johnson Warns Against ‘Over-Optimism’ Over Vaccine Roll-Out
Britain's Prime Minister Boris Johnson leaves Downing Street in London, on Dec. 2, 2020. Toby Melville/Reuters
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British Prime Minister Boris Johnson has expressed confidence that the newly announced vaccine roll-out will help the country return to normal life next spring, but has warned against ‘over-optimism’ as a result of the progress.

The government announced early Wednesday that the Pfizer/BioNTech vaccine had been approved by the UK regulator and will be available for use in the UK within days.