Diagnosis and Clinical Symptoms of COVID-19 (Coronavirus Disease 2019)

Abstract

The clinical manifestations of COVID-19 vary widely, ranging from asymptomatic to very severe respiratory distress. Both the body's immune response, both the natural body's immune response and the adaptive body's immune response, play a very important role in the course of COVID-19. Most patients infected with SARS-CoV-2 show symptoms of the respiratory system such as fever, coughing, sneezing, and shortness of breath. The most common symptoms are fever, dry cough, fatigue, and anosmia or ageusia. Other symptoms that can be found are productive cough, shortness of breath, sore throat, headache, myalgia/arthralgia, chills, nausea/vomiting, nasal congestion, diarrhea, abdominal pain, hemoptysis, and conjunctival congestion. A study concluded that more than 40% of fevers in COVID-19 patients had peak temperatures between 38.1-39°C, while 34% had fevers over 39°C.