MOSCOW — Coronavirus infections in Russia kept on rising this week, with authorities reporting a record-high 21,983 new cases on Friday, bringing the country’s total to nearly 1.9 million.

Russia, which has the fifth-highest tally of confirmed cases in the world, has been swept by a rapid resurgence of the outbreak since September. Despite the spike, Russian authorities insist there are no plans to impose a second lockdown or shut down businesses nationwide, even as media report overwhelmed hospitals, inundated doctors and shortages of medicines.

A series of restrictions aimed at curbing the outbreak took effect Friday in Moscow. The city authorities ordered restaurants, bars and nightclubs to close between 11 p.m. and 6 a.m., told university students to move to online classes, ordered theaters and cinemas to limit capacity to 25% and halted all mass entertainment events.

The restrictions will remain in place until Jan. 15 and will apply to New Year holidays as well, Moscow officials said.