No. There is no legal or ethical obligation for a health care worker to disclose their personal viral status to their prospective patients. The reason for this is that patients have no confidentiality obligations and could inappropriately share this information in a harmful way. Health care workers who have HIV or hepatitis must follow their countries' regulatory guidelines and not do procedures which put their patients at risk of harm. They must monitor their health and seek professional care from a personal physician. They must also use personal protective gear such as gloves, etc.