[quietbritishjim]

I have also read that it takes between 7 and 14 days from infection until you start to show symptoms. From your comment that would mean that anyone showing symptoms is "probably not that contagious". Given the exclusion rules rules here in the UK that doesn't sound right. What piece is missing?

[akiselev]

The onset of symptoms starts between 2 and 14 days after infection with 3 to 6 days being the average depending on the cohort. [1] Outliers exist, such as one patient that did not show symptoms for 27 days. It is unknown when a person becomes infectious, but so far data suggests that its days before symptoms appear for most patients and as many as two thirds may be completely asymptomatic.

[1] https://www.worldometers.info/coronavirus/coronavirus-incuba...