China's COVID outbreak will improve if existing policies implemented better - expert

'The duration of this epidemic depends on our prevention and control strategies, and how strong we implement our prevention and control measures,' said Wu Zunyou, chief epidemiologist at the China Center for Disease Control and Prevention. China's 'zero-COVID' stance, known as 'dynamic clearance', has come under growing scrutiny in recent weeks after the lockdown of the country's most populous city of Shanghai amid an outbreak of the highly contagious Omicron variant.