Cohort 1, males and females between 55 years and 85 years of age, history of close contact (cohabit) with a family member or a person newly diagnosed with SARS-CoV-2 infection, negative RT-PCR COVID-19 test on the screening and prior to start treatment . Cohort 2, males and females between 18 years and 85 years of age,confirmed virology diagnostic of COVID-19, asymptomatic ou mild COVID 19 pneumonia.

Cohort 1, males and females between 55 years and 85 years of age, history of close contact (cohabit) with a family member or a person newly diagnosed with SARS-CoV-2 infection, negative RT-PCR COVID-19 test on the screening and prior to start treatment . Cohort 2, males and females between 18 years and 85 years of age,confirmed virology diagnostic of COVID-19, asymptomatic ou mild COVID 19 pneumonia.