Johnson & Johnson’s COVID-19 vaccine candidate’s late stage clinical trial was paused following an ‘unexplained illness’ in a participant. The company is investigating whether the individual received the vaccine candidate, or a placebo, and whether their illness is related to their participation in the trial. Another promising COVID-19 vaccine candidate, developed at Oxford University and manufactured by AstraZeneca, saw a late stage trial paused following a safety event weeks ago, however it has since been resumed in jurisdictions outside of the United States.