Sadly, church services are amongst the most significant sources of infections. Almost all of Singapore's initial cases stemmed from a Chinese couple, who had the virus but no symptoms, attending a church service where a large number of attendees contracted the virus. More recently, as I mentioned in another post, a church in Germany which had just re-started services had sixty of its congregation fall ill with the virus, even though all wore face masks and the church was disinfected. So even after many other venues are re-opened, I expect churches will continue to play it safe and either remain closed or limit attendance.