Yes. Thank you for the question.
If you've had omicron as your only infection, you mount a response against omicron, but it doesn't provide a very broad response against other types of variants—past ones for sure. We don't know what the future will look like. However, if you have vaccine-induced immunity and infection on top of that, in whatever order—and in fact, they say if you've had three exposures to either vaccine or a combination of vaccines and infection—that gives you the most solid protection. So it seems to be the three exposures to the SARS virus or vaccine that give you really good, solid protection.
Relying on infection alone, there's variability. It may not last, and it may not be very broad. You really get this solid protection when you have either three doses of vaccine or a combination of vaccine and infection.