Coronavirus live news: vaccine trials 'encouraging' says WHO; South Korea tightens curbs in Seoul

A police officer wearing a protective suit to help protect against the spread of the coronavirus patrols as workers hold a rally to demand better working conditions in Seoul, South Korea, Saturday, 14 November. Photograph: Ahn Young-joon/AP

source https://www.theguardian.com/world/live/2020/nov/17/coronavirus-live-news-vaccine-progress-encouraging-says-who-south-korea-at-critical-crossroads