inclusion criteria: 1. age ≥18 years of age, inclusive, at the time of signing the informed consent. 2. willing and able to provide informed consent via an electronic process. 3. healthcare worker employed at a participating institution that has been identified as high-risk for sars-cov-2 exposure (may include doctors, nurses, nurse aids, radiographers, physiotherapists, phlebotomists, technicians, porters, cleaners, laboratory or other personnel identified as being at high risk of exposure), chw involved in the collection of samples for the identification of sars-cov-2 through pcr, and inner city inhabitants at high risk for sars-cov-2 exposure due to the nature of their work and frequent use of public transport (may include essential services employees such as fire fighters, law enforcement officers, grocery store employees; and non healthcare workers using public transport at least three times a week). 4. women of reproductive potential must be using a highly effective method of contraception prior to enrolment or must be willing to start a method at enrolment and continue its use throughout the duration of the study. 5. body weight ≥45 kg. 6. access to reliable video conference, telephone, direct/text messaging, or other device permitting real-time, reliable information transfer.

inclusion criteria: 1. age ≥18 years of age, inclusive, at the time of signing the informed consent. 2. willing and able to provide informed consent via an electronic process. 3. healthcare worker employed at a participating institution that has been identified as high-risk for sars-cov-2 exposure (may include doctors, nurses, nurse aids, radiographers, physiotherapists, phlebotomists, technicians, porters, cleaners, laboratory or other personnel identified as being at high risk of exposure), chw involved in the collection of samples for the identification of sars-cov-2 through pcr, and inner city inhabitants at high risk for sars-cov-2 exposure due to the nature of their work and frequent use of public transport (may include essential services employees such as fire fighters, law enforcement officers, grocery store employees; and non healthcare workers using public transport at least three times a week). 4. women of reproductive potential must be using a highly effective method of contraception prior to enrolment or must be willing to start a method at enrolment and continue its use throughout the duration of the study. 5. body weight ≥45 kg. 6. access to reliable video conference, telephone, direct/text messaging, or other device permitting real-time, reliable information transfer.

inclusion criteria: age ≥18 years of age, inclusive, at the time of signing the informed consent. willing and able to provide informed consent via an electronic process. healthcare worker employed at a participating institution that has been identified as high-risk for sars-cov-2 exposure (may include doctors, nurses, nurse aids, radiographers, physiotherapists, phlebotomists, technicians, porters, cleaners, laboratory or other personnel identified as being at high risk of exposure), chw involved in the collection of samples for the identification of sars-cov-2 through pcr, and inner city inhabitants at high risk for sars-cov-2 exposure due to the nature of their work and frequent use of public transport (may include essential services employees such as fire fighters, law enforcement officers, grocery store employees; and non healthcare workers using public transport at least three times a week). women of reproductive potential must be using a highly effective method of contraception prior to enrolment or must be willing to start a method at enrolment and continue its use throughout the duration of the study. body weight ≥45 kg. access to reliable video conference, telephone, direct/text messaging, or other device permitting real-time, reliable information transfer.

inclusion criteria: age ≥18 years of age, inclusive, at the time of signing the informed consent. willing and able to provide informed consent via an electronic process. healthcare worker employed at a participating institution that has been identified as high-risk for sars-cov-2 exposure (may include doctors, nurses, nurse aids, radiographers, physiotherapists, phlebotomists, technicians, porters, cleaners, laboratory or other personnel identified as being at high risk of exposure), chw involved in the collection of samples for the identification of sars-cov-2 through pcr, and inner city inhabitants at high risk for sars-cov-2 exposure due to the nature of their work and frequent use of public transport (may include essential services employees such as fire fighters, law enforcement officers, grocery store employees; and non healthcare workers using public transport at least three times a week). women of reproductive potential must be using a highly effective method of contraception prior to enrolment or must be willing to start a method at enrolment and continue its use throughout the duration of the study. body weight ≥45 kg. access to reliable video conference, telephone, direct/text messaging, or other device permitting real-time, reliable information transfer.

inclusion criteria: 1. age ≥18 years of age, inclusive, at the time of signing the informed consent. 2. willing and able to provide informed consent via an electronic process. 3. healthcare worker employed at a participating institution that has been identified as high-risk for sars-cov-2 exposure (may include doctors, nurses, nurse aids, radiographers, physiotherapists, phlebotomists, technicians, porters, cleaners, laboratory or other personnel identified as being at high risk of exposure), chw involved in the collection of samples for the identification of sars-cov-2 through pcr, and inner city inhabitants at high risk for sars-cov-2 exposure due to the nature of their work and frequent use of public transport (may include essential services employees such as fire fighters, law enforcement officers, grocery store employees; and non healthcare workers using public transport at least three times a week). 4. women of reproductive potential must be using a highly effective method of contraception prior to enrolment or must be willing to start a method at enrolment and continue its use throughout the duration of the study. 5. body weight ≥45 kg. 6. access to reliable video conference, telephone, direct/text messaging, or other device permitting real-time, reliable information transfer.

inclusion criteria: 1. age ≥18 years of age, inclusive, at the time of signing the informed consent. 2. willing and able to provide informed consent via an electronic process. 3. healthcare worker employed at a participating institution that has been identified as high-risk for sars-cov-2 exposure (may include doctors, nurses, nurse aids, radiographers, physiotherapists, phlebotomists, technicians, porters, cleaners, laboratory or other personnel identified as being at high risk of exposure), chw involved in the collection of samples for the identification of sars-cov-2 through pcr, and inner city inhabitants at high risk for sars-cov-2 exposure due to the nature of their work and frequent use of public transport (may include essential services employees such as fire fighters, law enforcement officers, grocery store employees; and non healthcare workers using public transport at least three times a week). 4. women of reproductive potential must be using a highly effective method of contraception prior to enrolment or must be willing to start a method at enrolment and continue its use throughout the duration of the study. 5. body weight ≥45 kg. 6. access to reliable video conference, telephone, direct/text messaging, or other device permitting real-time, reliable information transfer.

inclusion criteria: 1. age ≥18 years of age, inclusive, at the time of signing the informed consent. 2. willing and able to provide informed consent via an electronic process. 3. healthcare worker employed at a participating institution that has been identified as high-risk for sars-cov-2 exposure (may include doctors, nurses, nurse aids, radiographers, physiotherapists, phlebotomists, technicians, porters, cleaners, laboratory or other personnel identified as being at high risk of exposure) or a chw involved in the collection of samples for the identification of sars-cov-2 through pcr. 4. women of reproductive potential must be using a highly effective method of contraception for at least 28 days prior to enrolment and must be able and willing to continue its use throughout the duration of the study. 5. body weight ≥45 kg. 6. access to reliable video conference, telephone, direct/text messaging, or other device permitting real-time, reliable information transfer.

inclusion criteria: 1. age ≥18 years of age, inclusive, at the time of signing the informed consent. 2. willing and able to provide informed consent via an electronic process. 3. healthcare worker employed at a participating institution that has been identified as high-risk for sars-cov-2 exposure (may include doctors, nurses, nurse aids, radiographers, physiotherapists, phlebotomists, technicians, porters, cleaners, laboratory or other personnel identified as being at high risk of exposure) or a chw involved in the collection of samples for the identification of sars-cov-2 through pcr. 4. women of reproductive potential must be using a highly effective method of contraception for at least 28 days prior to enrolment and must be able and willing to continue its use throughout the duration of the study. 5. body weight ≥45 kg. 6. access to reliable video conference, telephone, direct/text messaging, or other device permitting real-time, reliable information transfer.