Police fire stun grenades at protesters in Minsk hours ahead of a deadline for the president to resign.
Police said the venue was too small for distancing, as the virus takes a toll on German festivities.
The opposition has threatened a mass walkout by workers if President Alexander Lukashenko does not resign.
As well as a night-time curfew, travel between regions can be banned under the emergency measures.
Wilton Gregory, Washington DC’s archbishop, is among 13 new cardinals to be nominated.
As well as a night-time curfew, travel between regions will be banned under the emergency measures.
The US vice-president has tested negative himself and says he will not self-isolate.
Bars and restaurants will also have to close early as the number of infections continues to rise.