Inside J&J's Latam COVID vaccine trial, a rush to recruit is followed by disappointment - Reuters

Earlier this month, Johnson & Johnson abruptly called for an end to enrollment in its coronavirus vaccine trial and told scientists from six Latin American countries to wrap up their work within 48 hours, two researchers told Reuters. https://www.reuters.com/article/us-health-coronavirus-vaccines-latinamer-idUSKBN28V1DE