Hong Kong ordered gyms and bars to close for a week, restored strict limits on public gatherings and introduced fines for anyone refusing to wear a mask on public transport in a fresh bid to prevent the resurgent coronavirus from spiraling out of control.

The tougher measures, to take effect Wednesday, include drastically limiting the number of people gathering in public back to four, Chief Executive Carrie Lam said in a news conference on Monday. The limit had just been raised to 50 in mid-June. The city also confirmed its eighth coronavirus death.

Among other measures: Hong Kong will require inbound travelers who have been to high-risk regions in the last 14 days to pass a virus test before boarding their flights; restaurants will be allowed to offer only takeout from 6 p.m. to 5 a.m.; and the number of patrons at a table at other times is limited to four. Amusement parks, gyms and 10 other types of venues are to close for seven days. Lam said the city will allow civil servants flexibility on working hours, and urged companies to let staff work from home.