By Reuters Staff (Reuters) - Many countries are rolling out COVID-19 vaccine booster shots, but there is no consensus among scientists that they are n.
By Reuters Staff (Reuters) - Many countries are rolling out COVID-19 vaccine booster shots, but there is no consensus among scientists that they are n.
Many countries are preparing to make COVID-19 vaccine booster shots available, but there is no consensus among scientists that they are necessary and the World Health Organization wants the most vulnerable people worldwide to be fully vaccinated first.
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