 Our respiratory tract functions by inhaling air from the outside world so infections of this system are very common.
Most often, RTIs spread when a person’s hands come into contact with nasal secretions from an infected person. Less often, infections spread when a person breathes air containing droplets that were coughed or sneezed out by an infected person.
RTIs affect the nose, throat, and airways and may be caused by several viral and bacterial pathogens. |
