inclusion criteria: 1) adults (18 to 80 years old): 1. within 72 hours of their hospitalization for infection with severe acute respiratory syndrome - corona virus - 2 (sars-cov-2), and, 2. within 72 hours of the latest polymerase chain reaction (pcr) positive result and within 7 days of the 1st pcr positive result for sars-cov-2. (the latest pcr could be the only pcr result.), and, 3. within 10 days of onset of any covid-19 symptoms.

inclusion criteria: 1) adults (18 to 80 years old): 1. within 72 hours of their hospitalization for infection with severe acute respiratory syndrome - corona virus - 2 (sars-cov-2), and, 2. within 72 hours of the latest polymerase chain reaction (pcr) positive result and within 7 days of the 1st pcr positive result for sars-cov-2. (the latest pcr could be the only pcr result.), and, 3. within 10 days of onset of any covid-19 symptoms.

inclusion criteria: 1) adults (18 to 80 years old): within 72 hours of their hospitalization for infection with severe acute respiratory syndrome - corona virus - 2 (sars-cov-2), and, within 72 hours of the latest polymerase chain reaction (pcr) positive result and within 7 days of the 1st pcr positive result for sars-cov-2. (the latest pcr could be the only pcr result.), and, within 10 days of onset of any covid-19 symptoms.

inclusion criteria: 1) adults (18 to 80 years old): within 72 hours of their hospitalization for infection with severe acute respiratory syndrome - corona virus - 2 (sars-cov-2), and, within 72 hours of the latest polymerase chain reaction (pcr) positive result and within 7 days of the 1st pcr positive result for sars-cov-2. (the latest pcr could be the only pcr result.), and, within 10 days of onset of any covid-19 symptoms.

inclusion criteria: 1) adults (18 to 80 years old): within 72 hours of their hospitalization for infection with sars-cov-2, and, within 72 hours of the latest pcr positive result and within 7 days of the 1st pcr positive result for sars-cov-2. (the latest pcr could be the only pcr result.), and, within 10 days of onset of any covid-19 symptoms.

inclusion criteria: 1) adults (18 to 80 years old): within 72 hours of their hospitalization for infection with sars-cov-2, and, within 72 hours of the latest pcr positive result and within 7 days of the 1st pcr positive result for sars-cov-2. (the latest pcr could be the only pcr result.), and, within 10 days of onset of any covid-19 symptoms.

inclusion criteria: 1) adults (18 to 80 years old): 1. within 72 hours of their hospitalization for infection with sars-cov-2, and, 2. within 72 hours of the latest pcr positive result and within 7 days of the 1st pcr positive result for sars-cov-2. (the latest pcr could be the only pcr result.), and, 3. within 10 days of onset of any covid-19 symptoms.

inclusion criteria: 1) adults (18 to 80 years old): 1. within 72 hours of their hospitalization for infection with sars-cov-2, and, 2. within 72 hours of the latest pcr positive result and within 7 days of the 1st pcr positive result for sars-cov-2. (the latest pcr could be the only pcr result.), and, 3. within 10 days of onset of any covid-19 symptoms.