It travels down the trachea – or windpipe – into one of two bronchi and into bronchioles before entering one of millions of alveoli, where gaseous exchange takes place. When we breathe out ...

Long-term exposure to PM2.5, PM10, NO2 and ozone (O3) air pollution is associated with more hospital admissions for lower respiratory tract infections in adults.

However, its contribution to lower respiratory infections -those that affect the lower respiratory tract, including the lungs, bronchi and alveoli- is less well documented, especially in adults. To ...

However, its contribution to lower respiratory infections —those that affect the lower respiratory tract, including the lungs, bronchi and alveoli—is less well documented, especially in adults.