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How and when will we know that a COVID-19 vaccine is safe and effective? – The Conversation US

Several vaccines are in Phase 3 trials. So when will we know whether any of these will protect against COVID-19?



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With COVID-19 vaccines currently in the final phase of study, youve probably been wondering how the FDA will decide if a vaccine is safe and effective.
Based on the status of the Phase 3 trials currently underway, it is unlikely that the results of these trials will be available before November. But it is likely that not just one but several of the competing COVID-19 vaccines will be shown to be safe and effective by the end of 2020.
I am a scientist and infectious diseases specialist at the …

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