Which type of bacteria can lead to abscesses and pustules on the skin?

Streptococci are spherical bacteria that can indeed lead to abscesses and pustules on the skin. They are known for causing infections that can result in pus formation, as seen in conditions like impetigo, cellulitis, and abscesses. When they infect skin tissues, they can cause inflammation and the accumulation of pus, leading to these visible skin issues.

Understanding the characteristics of the different types of bacteria can clarify why streptococci are the right answer here. Bacilli are rod-shaped bacteria, often associated with various infections but not specifically linked to abscesses in the same direct manner as streptococci. Diplococci, which appear in pairs, are most commonly known for causing pneumonia and certain sexually transmitted infections. Spirilla are spiral-shaped bacteria, which typically cause diseases like syphilis but are not as directly associated with the formation of abscesses and pustules.

This knowledge not only helps in understanding the specific types of bacterial infections but also aids in recognizing the appropriate treatment methods and maintaining skin health.