Post-COVID-19 Syndrome

Abstract

Around 117 million people have had COVID-19 diagnoses globally as of March 2021, and more than 2.6 million have
died as a result (1). The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes COVID-19 is a
heterogeneous virus with a wide range of symptoms, from asymptomatic to lethal conditions (2–7). One of the most
prevalent symptoms of SARS-CoV-2 is interstitial pneumonia, which can be made worse by acute respiratory distress
syndrome (ARDS), a condition with a high fatality rate, especially in elderly persons with several coexisting conditions
(2, 3). As the COVID-19 pandemic continues, many more symptoms have been reported, including lymphopenia and
elevated inflammatory markers (e.g., erythrocyte sedimentation rate, C-reactive protein, ferritin, tumor necrosis factor-,
IL-1, and IL-6) as well as symptoms like fever, dry cough, shortness of breath, fatigue, myalgias, nausea/vomiting or
diarrhea, headache, weakness, rhinorrhea, and (2, 3). Impaired heart, brain, lung, liver, kidney, and coagulation system
functions are some other severe and life-threatening COVID-19 consequences (4–7).