A nurse is caring for a 1-year-old child who has been hospitalized. Which of the following items in the child's room is a common source of health care-associated infection?

A. Bedside computer keyboards are frequently touched by healthcare providers, visitors, and sometimes the patient themselves. This constant contact can lead to the accumulation of bacteria and viruses, making it a common source of healthcare-associated infections. B. While protective gowns can harbor microorganisms, they are typically single-use items and disposed of after each patient, minimizing the risk of infection transmission. C. Unopened formula bottles are sterile and not a source of infection. D. Disposable diapers are designed to be hygienic and are not a significant source of infection.