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(FILES) In this file photo taken on November 17, 2020 An illustration picture shows a drop from a syringe with the logo of British pharmaceutical company AstraZeneca. Drugs company AstraZeneca and British Prime Minister Boris Johnson on January 28, 2021 defended the effectiveness of its Covid-19 vaccine after regulators in Germany said it should not be given to over 65s. (Photo by JUSTIN TALLIS / AFP)
(FILES) In this file photo taken on Nove... […]

Questions surround AstraZeneca vaccine use for elderly

The subject of a sometimes acrimonious row between the EU and Britain, the AstraZeneca Covid-19 vaccine has also fuelled debate over its effectiveness among the elderly