To Determine if the Use of Hydroxychloroquine as Preventive Therapy Decreases the Rate of Acquisition of SARS-CoV 2 Infections With Clinical COVID-19 Disease in Study Participants for Each Randomized Treatment Arm as Compared to Placebo.

To Determine if the Use of Hydroxychloroquine as Preventive Therapy Decreases the Rate of Acquisition of SARS-CoV 2 Infections With Clinical COVID-19 Disease in Study Participants for Each Randomized Treatment Arm as Compared to Placebo.

To determine if the use of hydroxychloroquine as preventive therapy decreases the rate of acquisition of SARS-CoV 2 infections and clinical COVID-19 disease in Study Participants for each randomized treatment arm as compared to placebo.

To determine if the use of hydroxychloroquine as preventive therapy decreases the rate of acquisition of SARS-CoV 2 infections and clinical COVID-19 disease in Study Participants for each randomized treatment arm as compared to placebo.