Exclusive: Oxford study indicates AstraZeneca effective against Brazil variant, source says ReutersCovid-19: Brazil Hits Record for Covid Deaths as Hospitals Near Collapse Bloomberg Quicktake: NowAstraZeneca Covid Vaccine Appears Effective Against Brazil Variant: Report Investor's Business DailyBrazil COVID-19 outbreak highlights dangers of new variants Global NewsUK finds missing case of Brazil variant, says no sign it has spread ReutersView Full Coverage on Google News