Can we Differentiate COVID-19 with Influenza Virus and Bacterial Pneumonia only from the Clinical Manifestation?

Corona virus disease 2019 is very contagious and has been spread worldwide. It can cause a fatal and severe respiratory syndromes, also affect many aspect in human life, such as economic and mental health. The clinical manifestation of this disease is similar with influenza virus and bacterial pneumonia. Thus, the aim of this article is to know whether we can differentiate Covid-19 with influenza virus and bacterial pneumonia, only from the clinical manifestation. Frequent symptoms of Covid-19 are fever, cough and shortness of breath. Influenza virus often has cough and pharyngalgia with fever, headache and myalgia while bacterial pneumonia usually has fever, cough with mucopurulent sputum. It can be concluded that even though there are several differences of the symptoms between Covid-19, influenza virus and bacterial pneumonia, it is still difficult to differentiate only from the clinical manifestation.