[iso1631]

"A semester or so" reasonably covers until September 2021. I can't see the world standing for social distancing that long, and as such covid will spread throughout the population just like Polio, TB and uncurable/vaccinable diseases of the past. IFR of covid for undergrads is about 0.002-0.005%, so 1 in 20k-50k.

Chance of death for a 20 year old in the UK is about 1 in 4k, so you're 5-10 times more likely to die for some other reason than covid.

Indeed by moving away from home you're less likely to infect older parents, so it's a rational call.