There is a noticeable periodicity in this record of daily Covid-19 deaths in Sweden. I don't think other nations show that kind of thing. What would be causing this?
Germany looks similar https://www.worldometers.info/coronavirus/country/germany/ ...
I think the usual explanation is that there is e.g. less testing/reporting on weekends etc (or more complicated technical reasons why the reports are clustered without the cases/deaths necessarily being clustered), and those numbers are then reported later in the week. Seems to fit that one cycle is roughly 7 days.