Which microorganism is classified as a standard for hospital disinfectants?

• A. Staphylococcus aureus
• B. Salmonella cholera suis
• C. Streptococcus pneumoniae
• D. Vibrio cholerae

Answer: (A)

Staphylococcus aureus is recognized as a standard for hospital disinfectants due to its widespread presence and potential to cause healthcare-associated infections. This microorganism serves as a benchmark when evaluating the efficacy of disinfectants in clinical settings. The selection of Staphylococcus aureus as a standard is based on its robustness and ability to survive on surfaces, making it a reliable indicator for assessing the effectiveness of cleaning and disinfection practices.

In comparison, the other microorganisms listed do not have the same level of significance as a standard for disinfectants in a hospital environment. While they can cause infections, they are not typically used as references for disinfectant efficacy testing. Thus, Staphylococcus aureus is preferred to ensure that disinfectants can effectively target resistant and pathogenic organisms commonly found in healthcare settings.