Which of the following best describes standard precautions?

Standard precautions are defined as universal practices designed to prevent the transmission of infections regardless of the known status of a patient. These precautions apply to all patients in healthcare settings and aim to reduce the risk of spreading infections. They include fundamental elements such as hand hygiene, the use of personal protective equipment (PPE) like gloves and masks, and safe handling of patient care equipment and waste.

By implementing these precautions universally, healthcare professionals can create a safer environment for both patients and themselves, as these practices account for all potential pathogens, not just those that are known or suspected to be present. This broad approach is essential in controlling infection transmission effectively.

The other options focus on specific situations or types of pathogens, which do not encompass the comprehensive nature of standard precautions. Thus, option B accurately captures the intent and implementation of these essential safety measures in healthcare.