what is a chest infection
What is Chest Infection. A chest infection is an infection of the airways leading down to the lungs, or an infection in the lungs themselves. 'Chest infection' is a general term that covers a number of conditions, including pneumonia and bronchitis.ymptoms of adult chest infection. The symptoms of acute bronchitis and pneumonia can be similar-for example, a cough that brings up phlegm (thick mucus), and a high temperature. However, the key difference between the symptoms of acute bronchitis and pneumonia is that pneumonia is more severe.