Coronavirus: How close is Hong Kong to a fourth wave of Covid-19?

When the Covid-19 pandemic started in January 2020, many around the world saw Hong Kong as an example of how communities could successfully contain the novel coronavirus that causes the disease. But the city has seen infections rise several times, including a third wave in July that prompted a tightening of social-distancing rules with financially painful caps on the number of people allowed to gather, drink and dine together. The Hong Kong government organised a mass-testing scheme in…