Transmission-based precautions are additional measures used for patients known or suspected to be infected with highly transmissible or epidemiologically important pathogens. These include: - Contact Precautions: Used for infections spread by direct or indirect contact, such as MRSA. - Droplet Precautions: Used for infections spread through large respiratory droplets, such as influenza. - Airborne Precautions: Used for infections spread through small airborne particles, such as tuberculosis.