Study group
The 132 people included in our study were divided into 3 groups. Group 1; Asymptomatic volunteering health employees who came out negative as a result of PCR for Covid-19 (n:30), Group 2; Moderately ill patients with clinical signs of pneumonia with no signs of severe pneumonia (severe pneumonia: Pneumonia fitting any one of the following conditions: respiratory rate ≥ 30 breaths/min; SpO2 ≤ 92%; patients with > 50% of lung infiltration rate) (n:62), Group 3: Severely ill patients who are admitted with severe pneumonia and develop macrophage activation syndrome in their follow-up (n:40).