Doesn't e.g. "a 73% relative risk of reinfection" mean being 0.73x as likely to be infected?
These numbers show (as one would expect) that prior infection makes you less likely to get Omicron, and that prior infection with more recent strains does so more effectively. (Which might be because they're more Omicron-like, or because the infection was more recent. I'm guessing more the latter.)
These numbers show (as one would expect) that prior infection makes you less likely to get Omicron, and that prior infection with more recent strains does so more effectively. (Which might be because they're more Omicron-like, or because the infection was more recent. I'm guessing more the latter.)