Coronavirus US: Vaccine trials could stop early if safe, says Fauci

Dr Anthony Fauci told Kaiser Health News that researchers would have a 'moral obligation' to stop trials early if the data was good enough. The FDA has said a shot should cut rate of symptomatic COVID-19 by at least 50% to get its approval. Three coronavirus vaccines are currently in their final-stage trials in the US. Some experts and Americans are concerned that political pressure, not data, is driving the push to approve vaccines. Currently, the three trials are expected to conclude this winter