In Finland, covid precautions in churches is a debated issue because the constitution gives very strong protection to freedom of religion. If needed, authorities can prevent public meetings and give strong recommendations about the upper limit of persons in private meetings but they do not give any orders or even recommendations for religious meetings - they simply do not have a right to that. Government is now planning to start discussion with churches to find out if these would voluntarily accept that church meetings would be added to a new law focusing on disease prevention. After that, authorities would have a right to limit the number of persons attending religious meetings.
Despite the freedom of churches, churches have largely adopted all general recommendations given by authorities and in many cases, have even been more cautious than the surrounding society. As far as I know, there has been only one case where a church happening spread covid to a number of people; in the meeting, less than 100 attended, 50 got covid. This was a very new church in Finland that attracted young adults to a happening in a limited space. It has been God’s grace that there has been no such cases in the other churches.