Absolute knock-out paper by @SunKaiyuan and colleagues on SARS-CoV-2 transmission. A few highlights:

1. Kids less susceptible than adults, but just as infectious
2. Presymptomatic spread ~50%
3. Quarantine/isolation not enough in itself

https://science.sciencemag.org/content/early/2020/11/23/science.abe2424

One point about #3 - this shows the importance of other measures, such as distancing and facemasks. However, to me is also one of _the_ strongest arguments for why we need frequent and rapid testing of a large proportion of the population - i.e., public health screening.

Did I mention I really like this paper? Oh, okay good - make sure you read it - it really is very very good.