Characteristics, Comorbidities, and Outcomes of 18 – 35 Years Old COVID-19 Patients with Severe Symptoms at Dr. Soetomo Hospital Surabaya Tazkia Izzatun Az Zahra1, Asra Al Fauzi2*, Gatot Soegiarto3 Abstract Background: At the end of December 2019, a case of pneumonia with an unknown cause was found in Wuhan City,