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Science / Health

2 people report allergic reaction to vaccine

LONDON — British regulators warned that people with a history of serious allergic reactions shouldn’t receive the new Pfizer-BioNTech vaccine while they investigate two adverse reactions on the first day of the country’s mass vaccination […]

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Science / Health

Studies suggest AstraZeneca vaccine safe

WASHINGTON — New results on a possible COVID-19 vaccine from Oxford University and drugmaker AstraZeneca suggest it is safe and about 70% effective. Some experts say that shows it is likely to win approval. Partial […]