1. All consenting male and female adult Naval personnel (18-59.9 years of age) 2. Exposure to a patient with confirmed COVID-19 infection (rRT-PCR positive for SARS-CoV-2 virus) 3. The exposure should be for >30 mins within 2 meters of the infected individual and should be within ONE WEEK at the time of inclusion in the study 4. Recruited within 48 hours of admission to these centers 5. Willing to take study drug as directed for 5 days.

1. All consenting male and female adult Naval personnel (18-59.9 years of age) 2. Exposure to a patient with confirmed COVID-19 infection (rRT-PCR positive for SARS-CoV-2 virus) 3. The exposure should be for >30 mins within 2 meters of the infected individual and should be within ONE WEEK at the time of inclusion in the study 4. Recruited within 48 hours of admission to these centers 5. Willing to take study drug as directed for 5 days.