At least in this test https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-provide-update-omicron-variant https://www.pfizer.com/n

At least in this test https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-provide-update-omicron-variant https://www.pfizer.com/news/press-release/press-release-deta... they did account for that, which does suggest that 3 doses are in fact better than 2 without the waning effect. > The sera were collected from subjects 3 weeks after receiving the second dose or one month after receiving the third dose of the Pfizer-BioNTech COVID-19 vaccine.