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Out of 8 companies, just 3 vaccines are in final stage of trials | WNT

Pfizer said that it might know next month if its vaccine is safe and effective while Moderna says it could have its vaccine by November as AstraZeneca’s U.S. trial is still on hold. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: WATCH WORLD NEWS TONIGHT ON HULU: #WorldNewsTonight #COVID19 #Vaccine

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