Covid-19 why it. s Fatal disese

Covid-19 is arespiratory
Disease some disease of the respiratory tract occures in the upper part such as
Tonsilites,pharyngities,and sinusites
In comparison with lower infection the upper infections is less in the mortality
Lower respiratory tract infections such as bronchities and pneumonia
May be fatal.
The dangerous effect of corona virus infections it occures in both first at upper then to the lower respiratory tract
So it finally leads to respiratory failure and death

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中国与吸烟和日冕病毒

Corona virus patients and the most dangerous type