Participants who meet any of following criteria will be are excluded <br/ >1. have a proven diagnosis of COVID-19 infection <br/ >2. are currently taking chloroquine or HCQ <br/ >3. are pregnant <br/ >4. are breast feeding <br/ >5. known QT prolongation <br/ >6. history of serious cardiac dysrhythmias or cardiomyopathy <br/ >7. have maculopathy of the eye (a contra-indication to HCQ) <br/ >8. are immunocompromised because of a disease or therapy <br/ >9. pregnant women

Participants who meet any of following criteria will be are excluded <br/ >1. have a proven diagnosis of COVID-19 infection <br/ >2. are currently taking chloroquine or HCQ <br/ >3. are pregnant <br/ >4. are breast feeding <br/ >5. known QT prolongation <br/ >6. history of serious cardiac dysrhythmias or cardiomyopathy <br/ >7. have maculopathy of the eye (a contra-indication to HCQ) <br/ >8. are immunocompromised because of a disease or therapy <br/ >9. pregnant women

N/A

N/A

Participants who meet any of following criteria will be are excluded <br/ >1. have a proven diagnosis of COVID-19 infection <br/ >2. are currently taking chloroquine or HCQ <br/ >3. are pregnant <br/ >4. are breast feeding <br/ >5. known QT prolongation <br/ >6. history of serious cardiac dysrhythmias or cardiomyopathy <br/ >7. have maculopathy of the eye (a contra-indication to HCQ) <br/ >8. are immunocompromised because of a disease or therapy <br/ >9. pregnant women

Participants who meet any of following criteria will be are excluded <br/ >1. have a proven diagnosis of COVID-19 infection <br/ >2. are currently taking chloroquine or HCQ <br/ >3. are pregnant <br/ >4. are breast feeding <br/ >5. known QT prolongation <br/ >6. history of serious cardiac dysrhythmias or cardiomyopathy <br/ >7. have maculopathy of the eye (a contra-indication to HCQ) <br/ >8. are immunocompromised because of a disease or therapy <br/ >9. pregnant women