inclusion criteria: 1. males and females 18 years of age or older 2. hospitalized for covid-19 with the most recent test positive*; not receiving or likely to receive invasive mechanical ventilation within the next 24 hours 3. prior history of at least one of: i) cvd [cardiovascular (cv), cerebrovascular or peripheral vascular diagnoses], ii) age > 64, iii) diabetes (dm), iv) hypertension (htn), v) abnormal serum lipids, vi) obesity (bmi > or equal 30 or waist circumference >102 cm [40"] for men and >88 cm [35"] for women), vii) current smoker * must be pcr test.

inclusion criteria: 1. males and females 18 years of age or older 2. hospitalized for covid-19 with the most recent test positive*; not receiving or likely to receive invasive mechanical ventilation within the next 24 hours 3. prior history of at least one of: i) cvd [cardiovascular (cv), cerebrovascular or peripheral vascular diagnoses], ii) age > 64, iii) diabetes (dm), iv) hypertension (htn), v) abnormal serum lipids, vi) obesity (bmi > or equal 30 or waist circumference >102 cm [40"] for men and >88 cm [35"] for women), vii) current smoker * must be pcr test.

inclusion criteria: males and females 18 years of age or older tested positive and hospitalized for covid-19 within the past 24 hours; illness severity must be less than indicated for intensive care unit (icu) admission prior history of cvd [cardiovascular (cv), cerebrovascular or peripheral vascular diagnoses], and/or significant risk factors for cvd [age > 64, diabetes (dm), hypertension (htn), abnormal serum lipids, obesity (bmi greater than 30)]

inclusion criteria: males and females 18 years of age or older tested positive and hospitalized for covid-19 within the past 24 hours; illness severity must be less than indicated for intensive care unit (icu) admission prior history of cvd [cardiovascular (cv), cerebrovascular or peripheral vascular diagnoses], and/or significant risk factors for cvd [age > 64, diabetes (dm), hypertension (htn), abnormal serum lipids, obesity (bmi greater than 30)]

inclusion criteria: 1. males and females 18 years of age or older 2. tested positive and hospitalized for covid-19 within the past 24 hours; illness severity must be less than indicated for intensive care unit (icu) admission 3. prior history of cvd [cardiovascular (cv), cerebrovascular or peripheral vascular diagnoses], and/or significant risk factors for cvd [age > 64, diabetes (dm), hypertension (htn), abnormal serum lipids, obesity (bmi greater than 30)]

inclusion criteria: 1. males and females 18 years of age or older 2. tested positive and hospitalized for covid-19 within the past 24 hours; illness severity must be less than indicated for intensive care unit (icu) admission 3. prior history of cvd [cardiovascular (cv), cerebrovascular or peripheral vascular diagnoses], and/or significant risk factors for cvd [age > 64, diabetes (dm), hypertension (htn), abnormal serum lipids, obesity (bmi greater than 30)]