As Omicron emerges, countries weigh need for Covid-19 booster shots : vimarsana.com

WASHINGTON - Many countries are rolling out Covid-19 vaccine booster shots, but there is no consensus among scientists that they are necessary and the World Health Organisation wants the most vulnerable people worldwide to be fully vaccinated first. Concern over the Omicron coronavirus variant has led some countries to expand their booster programmes. Here are some of the options countries...

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