inclusion criteria: * hospitalized * must be first admission of covid-19, not re-admission * primary reason for hospitalization or prolonged hospitalization is because of acute covid-19 diagnosis * adults 18 years of age or greater * laboratory-proven covid-19 within 14 days prior to hospital admission

inclusion criteria: * hospitalized * must be first admission of covid-19, not re-admission * primary reason for hospitalization or prolonged hospitalization is because of acute covid-19 diagnosis * adults 18 years of age or greater * laboratory-proven covid-19 within 14 days prior to hospital admission

inclusion criteria: hospitalized must be first admission of covid-19, not re-admission primary reason for hospitalization or prolonged hospitalization is because of acute covid-19 diagnosis adults 18 years of age or greater laboratory-proven covid-19 within 14 days prior to hospital admission

inclusion criteria: hospitalized must be first admission of covid-19, not re-admission primary reason for hospitalization or prolonged hospitalization is because of acute covid-19 diagnosis adults 18 years of age or greater laboratory-proven covid-19 within 14 days prior to hospital admission

inclusion criteria: - first hospitalization for acute covid-19 - adults 18 years of age or greater - laboratory-proven covid-19 within 24 hours of hospital admission

inclusion criteria: - first hospitalization for acute covid-19 - adults 18 years of age or greater - laboratory-proven covid-19 within 24 hours of hospital admission