NSW Health is advising current and former patients of retired Sydney dentist Dr William Tam to get tested for bloodborne viruses, after concerns that he may have exposed patients during treatment at his dental clinic. According to the health authority, the warning covers thousands of people who visited the practice. The specific infections NSW Health cites are hepatitis B, hepatitis C and HIV. Patients are being encouraged to follow NSW Health guidance on testing, which typically includes assessing their risk and arranging appropriate blood tests. The notification reflects NSW Health’s assessment of potential exposure to bloodborne pathogens in a healthcare setting. The advice is intended to support early detection and treatment if infections were transmitted. Sources agree that the warning is linked to Dr Tam’s time practising dentistry and that the risk relates to possible exposure to bloodborne viruses while under his care.