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Vials labelled "Astra Zeneca COVID-19 Coronavirus Vaccine" and a syringe are seen in front of a displayed AstraZeneca logo, in this illustration photo taken March 14, 2021. REUTERS/Dado Ruvic/Illustration/File Photo/File Photo
Coronavirus chronicle

Countries emphasise importance of AstraZeneca shot as they look to alternatives

Some countries have limited its use to older age groups as a precaution while cases of clotting are investigated