BRUSSELS( REUTERS)-At the height of Europe's vaccine supply crisis in March, Johnson Johnson's( JJ) single-dose Covid-19 vaccine was touted as a game changer....
But two months into its roll-out, the shot has the lowest uptake of all four approved vaccines. Supply problems, safety concerns, improved deliveries of rival vaccines and countries' inoculation strategies have all played a part in holding back usage. Despite the shot's clear logistical advantage of not requiring a booster, the Europea
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2021-06-23 00:00:00.0