Which organism is commonly associated with causing cellulitis?

Cellulitis is a common, potentially serious bacterial skin infection that primarily affects the deeper layers of the skin and the underlying tissue. Staphylococcus aureus is particularly well-known for being a major pathogen involved in cellulitis. This bacteria is capable of penetrating the skin through breaks or wounds, leading to infection.

Staphylococcus aureus can cause localized inflammation, redness, swelling, and pain, which are characteristic symptoms of cellulitis. Additionally, it is an opportunistic pathogen, meaning it can exploit pre-existing conditions such as skin breaks or chronic illnesses, which further facilitates its ability to cause infections like cellulitis.

While other organisms can also be involved in skin infections, Staphylococcus aureus is the most prevalent cause due to its virulence factors and ability to adhere to and invade tissues. This highlights its role as a primary culprit in the onset of cellulitis, making it the correct choice in this question.