Respiratory tract diseases are illnesses that affect components of the respiratory system, including the nasal passages, the bronchi and the lungs. They range from acute infections, such as pneumonia ...
COVID-19 is the disease caused by SARS-CoV-2, the coronavirus that emerged in December 2019. Coronaviruses are a type of virus. There are many different kinds, and some, like COVID-19, cause disease ...
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