Immunodeficiency: A Protective Factor for COVID-19?

Abstract

Coronavirus disease 2019 is an infection that involves the respiratory tract and is attributed to severe acute respiratory syndrome coronavirus 2. While most people develop mild or uncomplicated illness, approximately 15% develop a severe disease that requires oxygen support, and 5% develop a critical disease. While immunodeficiency is reported as a risk factor for COVID-19, we present a patient with idiopathic CD4+ lymphocytopenia who developed severe COVID-19 with an unexpected clinical course and complete recovery.