A study released in pre-print (not yet peer reviewed) on Aprill 19 at https://www.medrxiv.org/ has found evidence that the viral load of Omicron infections is similar for both vaccinated and unvaccinated individuals.

The study is titled, Similar viral loads in Omicron infections regardless of vaccination status and can be found at the following link https://www.medrxiv.org/content/10.1101/2022.04.19.22274005v1 or view and download the PDF below.