Covid-19 Live Updates: Johnson & Johnson Tests One-Shot Vaccine

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The final stage of testing for potential Corona virus vaccine is now underway. The Johnson and Johnson trials will be the largest with plans to enroll 60,000 participants. The experimental vaccine may also have several advantages. It does not need to be stored in sub zero temps, and it may just require one dose instead of two. If all goes as planned, Johnson and Johnson may be able to determine if the vaccine is safe and effective by the end of the year. Maria Garcia CBS

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