inclusion criteria: 1. sars-cov-2 infection confirmed by pcr. 2. admitted in the hospital in the previous 48 hours, with clinical status 3, 4 or 5 of who classification. 3. age above 18 years old. 4. informed written consent.

inclusion criteria: 1. sars-cov-2 infection confirmed by pcr. 2. admitted in the hospital in the previous 48 hours, with clinical status 3, 4 or 5 of who classification. 3. age above 18 years old. 4. informed written consent.

inclusion criteria: sars-cov-2 infection confirmed by pcr. admitted in the hospital in the previous 48 hours, with clinical status 3, 4 or 5 of who classification. age above 18 years old. informed written consent.

inclusion criteria: sars-cov-2 infection confirmed by pcr. admitted in the hospital in the previous 48 hours, with clinical status 3, 4 or 5 of who classification. age above 18 years old. informed written consent.

inclusion criteria: 1. sars-cov-2 infection confirmed by pcr. 2. admitted in the hospital in the previous 48 hours, with clinical status 3, 4 or 5 of who classification. 3. age above 18 years old. 4. informed written consent.

inclusion criteria: 1. sars-cov-2 infection confirmed by pcr. 2. admitted in the hospital in the previous 48 hours, with clinical status 3, 4 or 5 of who classification. 3. age above 18 years old. 4. informed written consent.