what is a lung infection
A lung infection is an inflammation in or around the lung tissues that is caused by a virus, fungi, or bacteria. There are a number of things that can trigger this sort of problem, but the four most common tend to be asthma, bronchitis, pneumonia, and tuberculosis.uberculosis. Tuberculosis is one of the most serious lung diseases a person can get. It is a serious pulmonary infection that is caused by mycobacterium tuberculosis. The lungs are usually the main organ affected, but the infection can and often does spread.