Final answer:
If a healthcare worker has an open sore while treating a patient, they should take immediate precautions to prevent the spread of infection.
Step-by-step explanation:
If a healthcare worker has an open sore while treating a patient, they should take immediate precautions to prevent the spread of infection. They should stop treating the patient and inform their supervisor or infection control department. They should also cover the open sore with a clean, waterproof dressing and use personal protective equipment, such as gloves and a mask, to minimize the risk of contamination. It is essential for the healthcare worker to follow strict hand hygiene practices and disinfect any equipment or surfaces that come into contact with the open sore.