this is misleading information. whether or not the vaccine prevents the transmission is not yet fully understood, as of today's currently posted CDC guidelines. also, whether or not the masseur is vaccinated certainly does have an effect. two or more people who are fully vaccinated can be together in a room without worry. however, if one or more is not vaccinated, there is a chance (however slight) that the virus can still be transmitted, even if you have been fully vaccinated. as no vaccine is 100% effective.