The most common organism causing wound infections is:

• A. Staph
• B. Candida
• C. Neisseria
• D. HBV

Answer: (A)

Wounds most often get infected by the skin’s own bacteria, with Staphylococcus aureus being the usual culprit. This organism naturally resides on the skin and in the nasal passages, so when a break in the skin occurs, S. aureus readily contaminates the wound and, aided by its virulence factors, can invade tissues and produce pus. Because of its ubiquity on the skin and its efficient ability to cause infection, it remains the most common cause of wound infections across a wide range of settings, including acute injuries and surgical wounds.

Candida can cause wound infections in certain situations, especially in moist, chronic, or immunocompromised wounds, but it is not the most frequent offender overall. Neisseria is typically associated with mucosal infections rather than skin wounds, and hepatitis B virus is a systemic infection that does not cause wound infections.