March 12, 2021 Health authorities are trying to contain a growing outbreak at Ursus Fitness. South China Morning Post Anyone going to the gym in Hong Kong must wear a mask from midnight on Thursday (March 11), after a “super-spreading” coronavirus cluster linked to a popular fitness centre in the city affected international schools, banks and other gyms, and resulted in more than 240 people being quarantined. In a statement, the government said the rule would be in force for six days. Previously, apart from those in group classes, people working out at a gym were not required to wear masks. The move came as a chronically ill 70-year-old woman died on Thursday, after getting the Sinovac Covid-19 vaccine on March 2, while a 67-year-old man, who took the jab on the same day, remained in critical condition after he collapsed at noon.