Bronchitis (chest cold) is not an upper respiratory tract infection. Rather, it affects the air-transporting tubes of the lungs (bronchioles), which are a part of the lower respiratory tract.Apr 1, 2021
Bronchitis (chest cold) is not an upper respiratory tract infection. Rather, it affects the air-transporting tubes of the lungs (bronchioles), which are a part of the lower respiratory tract.Apr 1, 2021