What are some bacterial infections of the lungs?
Bacterial pneumonia causes an inflammation in the alveoli. This can lead to the formation of pus in these air sacs, causing symptoms, such as coughing up phlegm, breathing difficulties, a fever and feeling tired. Although pneumonia can also be caused by viruses and fungi, the bacterium called Streptococcus pneumoniae is the type of bacteria that most commonly causes bacterial pneumonia in the United States, as noted by Mayo Clinic. Sometimes bacterial pneumonia can affect only one section of the lung, which is referred to as lobar pneumonia.
Sources: webmd.com, mayoclinic.org, cdc.gov