As Europe imposed new restrictions to try to stall a second coronavirus wave, hopes for vaccines suffered a blow with the suspension of two clinical trials in the United States.
China meanwhile has begun testing an entire city of nine million within days after a minor coronavirus outbreak. The virus is still spreading rapidly worldwide, with over one million deaths and 37 million infections.
Many nations that suppressed their first outbreaks now face a second wave. Hopes for a rapid vaccine rollout hit a setback as US pharmaceutical firm Eli Lilly said it had suspended the Phase 3 trial of its antibody treatment over an unspecified incident, the second in less than 24 hours after Johnson & Johnson ran into a similar problem.