
Australian Health Authorities Warn Thousands of Dental Patients to Get Tested for HIV and Hepatitis
Patients of a retired Sydney dentist may have been exposed to bloodborne viruses due to poor infection control. Health officials urge immediate testing.
Sydney Dental Patients Urged to Test for Bloodborne Viruses After Clinic Audit
Health authorities in New South Wales, Australia, have issued an urgent public warning advising former patients of a retired Sydney dentist to get tested for bloodborne viruses, following the discovery of serious infection control failures at his clinic.
What Happened at Dr. William Tam's Clinic?
Dr. William Tam, who operated a dental practice in Strathfield in western Sydney, has been identified as the centre of a potential public health concern. The New South Wales state health ministry revealed on Wednesday that thousands of patients who visited his clinic may have been exposed to hepatitis B, hepatitis C, and HIV as a result of inadequate hygiene and sterilisation practices.
The clinic underwent an official audit in April, during which health inspectors uncovered troubling evidence of poor cleaning procedures and improperly sterilised dental equipment. Tam retired just two weeks after the audit was conducted, according to local media reports. He has since been de-registered as a practising dentist.
Health Officials Stress the Importance of Testing
"The poor infection control practices at Dr. Tam's practice means all former patients may be at low risk of a bloodborne virus infection, which can have serious and long-lasting health impacts," said Dr. Leena Gupta, Public Health Clinical Director of the Sydney Local Health District.
Dr. Gupta also emphasised that many people infected with HIV, hepatitis B, or hepatitis C can remain completely asymptomatic for decades, making voluntary testing essential even in the absence of obvious symptoms. Early detection, she noted, allows patients to access appropriate treatment before the conditions progress.
While health authorities believe Dr. Tam treated thousands of patients over his 25-year career, they confirmed that no patient records are available that could be used to directly contact former visitors to the clinic.
What Should Former Patients Do?
Anyone who received dental treatment at Dr. Tam's Strathfield clinic is strongly encouraged to:
- Consult their general practitioner as soon as possible
- Request a blood test for hepatitis B, hepatitis C, and HIV
- Remain calm — health officials stress the overall risk remains low
A Recurring Issue in Australian Dental Clinics
Unfortunately, this is not an isolated incident. Australia has faced similar public health scares at dental practices on multiple occasions in recent years.
In 2018, approximately 10,000 patients in Sydney were asked to undergo blood testing after potential exposure to HIV and hepatitis at a dental clinic in Haberfield. More recently, in October of last year, patients at a dental practice in Mortdale — a suburb in southern Sydney — were likewise urged to get tested, with the dentist in question being banned from practising after breaching infection control regulations.
These repeated incidents highlight the critical importance of rigorous infection control standards within dental practices and the need for consistent regulatory oversight to protect public health.


