The COVID-19 pandemic

[tomh009]

As for NZ, travel is a likely factor for a plurality of young folks, but there are many many factors. Age and pre-existing conditions do not play a role in how likely you are to contract the virus--beyond that of behavioural changes--but in Ontario it does change your chances of being TESTED for the virus, where those who are in high risk groups are more likely to be tested, thus our positive rate will be more likely to undercount low risk individuals.

We also have a local custom of older individuals traveling to southern destinations for the winter, so I don't actually know how prevalent travel is amount different age groups.

Ontario stats (they are starting to publish more data now) show 625 infections due to travel; about 30% of those (184 cases) were from the US, so our porous border certainly leaked a lot of infections early on.

But here is an interview with an Air Canada flight attendant. That's eight positive cases among the cabin staff alone, not including the passengers, from a single flight from Frankfurt (to likely Toronto).
https://www.theguardian.com/world/2020/a...o-covid-19