World Coronavirus Dispatch: Covid boosts risk of psychiatric disorders

Ukraine President tests positive, Hungary and Portugal plan curfews as cases surge, spike in Australian business confidence and other pandemic-related news across the globe

Brazil halts Chinese vaccine trial: The final-stage trial of a Chinese frontrunner vaccine candidate has been halted in Brazil due to a serious adverse event.  Testing of Sinovac Biotech’s vaccine, called Coronavac, has been halted in Brazil after an event that occurred on 29 October, said the Brazil Health Agency on Tuesday, without giving any further detail on what happened. The study is interrupted in accordance with regulations while the agency analyzes if the study should continue, it said. Sao Paulo’s Instituto