Final answer:
Abscesses are an example of a bacterial infection. They are pus-filled lesions that can occur in various parts of the body.
Step-by-step explanation:
Abscesses, which are collections of pus, are an example of a bacterial infection.
Infections can be classified as local, focal, or systemic depending on their extent. Local infections are confined to a small area of the body, like a hair follicle infected by Staphylococcus aureus, resulting in a boil. Abscesses are pus-filled lesions that can occur in various parts of the body.
Examples and images of abscesses caused by bacterial infections can be seen in Figures 21.4 and 21.10.