inclusion criteria: 1. adults ≥ 18 years old; 2. evaluated in the emergency unit with probable or confirmed infection by covid-19; 3. time between symptoms and inclusion ≤ 07 days \*; 4. present mild or moderate signs and symptoms, with no clear indication for hospitalization; 5. present at least 2 risk factors for complication: * 65 years * hypertension * diabetes mellitus * asthma * chronic obstructive pulmonary disease (copd) or other chronic lung diseases * smoking * immunosuppression * obesity (bmi\> 30) * history of non-active cancer * bed restriction or reduced mobility (≥50% of the wake time without walking) * previous history of vte * use of oral hormonal contraceptives

inclusion criteria: 1. adults ≥ 18 years old; 2. evaluated in the emergency unit with probable or confirmed infection by covid-19; 3. time between symptoms and inclusion ≤ 07 days \*; 4. present mild or moderate signs and symptoms, with no clear indication for hospitalization; 5. present at least 2 risk factors for complication: * 65 years * hypertension * diabetes mellitus * asthma * chronic obstructive pulmonary disease (copd) or other chronic lung diseases * smoking * immunosuppression * obesity (bmi\> 30) * history of non-active cancer * bed restriction or reduced mobility (≥50% of the wake time without walking) * previous history of vte * use of oral hormonal contraceptives

inclusion criteria: adults ≥ 18 years old; evaluated in the emergency unit with probable or confirmed infection by covid-19; time between symptoms and inclusion ≤ 07 days *; present mild or moderate signs and symptoms, with no clear indication for hospitalization; present at least 2 risk factors for complication: 65 years hypertension diabetes mellitus asthma chronic obstructive pulmonary disease (copd) or other chronic lung diseases smoking immunosuppression obesity (bmi> 30) history of non-active cancer bed restriction or reduced mobility (≥50% of the wake time without walking) previous history of vte use of oral hormonal contraceptives

inclusion criteria: adults ≥ 18 years old; evaluated in the emergency unit with probable or confirmed infection by covid-19; time between symptoms and inclusion ≤ 07 days *; present mild or moderate signs and symptoms, with no clear indication for hospitalization; present at least 2 risk factors for complication: 65 years hypertension diabetes mellitus asthma chronic obstructive pulmonary disease (copd) or other chronic lung diseases smoking immunosuppression obesity (bmi> 30) history of non-active cancer bed restriction or reduced mobility (≥50% of the wake time without walking) previous history of vte use of oral hormonal contraceptives

inclusion criteria: 1. adults ≥ 18 years old; 2. evaluated in the emergency unit with probable or confirmed infection by covid-19; 3. time between symptoms and inclusion ≤ 07 days *; 4. present mild or moderate signs and symptoms, with no clear indication for hospitalization; 5. present at least 2 risk factors for complication: - 65 years - hypertension - diabetes mellitus - asthma - chronic obstructive pulmonary disease (copd) or other chronic lung diseases - smoking - immunosuppression - obesity (bmi> 30) - history of non-active cancer - bed restriction or reduced mobility (≥50% of the wake time without walking) - previous history of vte - use of oral hormonal contraceptives

inclusion criteria: 1. adults ≥ 18 years old; 2. evaluated in the emergency unit with probable or confirmed infection by covid-19; 3. time between symptoms and inclusion ≤ 07 days *; 4. present mild or moderate signs and symptoms, with no clear indication for hospitalization; 5. present at least 2 risk factors for complication: - 65 years - hypertension - diabetes mellitus - asthma - chronic obstructive pulmonary disease (copd) or other chronic lung diseases - smoking - immunosuppression - obesity (bmi> 30) - history of non-active cancer - bed restriction or reduced mobility (≥50% of the wake time without walking) - previous history of vte - use of oral hormonal contraceptives