Inclusion Criteria:  Able and willing to give verbal informed consent to participate in the study or able to assent with guardian consent Expected to remain in the hospital for the duration of the study Mental health diagnosis Demographics Male, female, or transgender (no exclusion criteria based on gender or sexual orientation) Ages 18 or older Any race or ethnicity English speaking  Exclusion Criteria:  Cognitive impairment sufficient to interfere with participant's ability to provide assent People who are non-English speakers or who have major visual or hearing impairment will be excluded given the need to converse with the Trusted Messenger verbally People who have received any of the available forms of the COVID-19 vaccine, or those with a medical exemption for receiving the vaccine.