> It's even worse than that; hazard ratio increases significantly with each re-infection https://www.nature.com/articles/s41591-022-02051-3

I don’t think this paper is a great source for that idea - the ratio of people with one infection (440,000) to people with three or more infections (1,000) is so different that I wonder if demographics or behavioral characteristics differ between the groups.

Empirically, their conclusion can’t really be true or each COVID-wave would be worse than the preceding one