In the data table, which infection had the highest number of observed infections?

• A. Surgical site infections (SSIs)
• B. Catheter-associated urinary tract infections (CAUTIs)
• C. Central line-associated bloodstream infections (CLABSIs)
• D. Laboratory identified C. difficile infections (CDIs)

Answer: (D)

To understand which infection had the most observed cases, focus on the actual counts shown for each infection type in the data table. “Observed infections” means the real number of cases recorded. The infection type with the largest numeric value is the one with the highest observed infections. In this dataset, laboratory-identified C. difficile infections have the highest count, so they appear most frequently in the table. This can happen because CDI is a common concern in healthcare, and many programs count lab-confirmed cases, which often yields higher numbers. The other infections—surgical site infections, catheter-associated urinary tract infections, and central line-associated bloodstream infections—have lower counts in this table, reflecting their respective frequencies and how the data were collected or defined.