Final answer:
Impetigo is most often affected by the demographic of children. It is a contagious skin infection characterized by the formation of vesicles, pustules, and possibly bullae. Topical or oral antibiotic treatment is typically effective in treating impetigo.
Step-by-step explanation:
The demographic most often affected by impetigo are children. This skin infection is highly contagious and is known to cause the formation of vesicles, pustules, and bullae, typically around the nose and mouth. Impetigo is caused by Staphylococcus aureus, Streptococcus pyogenes, or a combination of both, and is most commonly diagnosed by its characteristic appearance.