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Compulsory vaccinations and lockdowns: World struggles as Omicron and Delta variants spell return of unpopular curbs
COVID delta variant as contagious as chickenpox, vaccine breakthrough cases can still spread virus: US CDC
Delta variant can spur surge in COVID-19 cases worldwide; five things we know about Variant of Concern
With Delta variant of coronavirus, is a COVID-19 booster shot required? Here's what experts say
Explained: Johnson & Johnson says its COVID-19 vaccine is effective against Delta variant; what this means
J&J has indicated that it is in talks with the Indian government to bring its vaccine to the country of 1.3 billion people
