The Breaking Alert from NSW Health
In a startling public health announcement, NSW Health has issued an urgent call for thousands of former patients of a retired Sydney dentist to undergo testing for serious bloodborne viruses. The alert stems from a routine audit that uncovered significant lapses in infection control at the practice, raising concerns about potential exposure over more than two decades of operation.
The dentist in question, Dr William Tam, operated his clinic at Suite B, 2 Albert Road in Strathfield, a bustling suburb in Sydney's inner west. For over 25 years, he provided dental services to an estimated 5,000 patients. The practice came under scrutiny following a complaint lodged with the Dental Council of New South Wales, prompting an inspection on April 24, 2026. Just two weeks later, Dr Tam retired, and he is no longer a registered dental practitioner.
Officials emphasize that while the risk of transmission is considered low, precautionary testing is essential because these viruses can remain asymptomatic for decades, silently progressing to severe health issues if untreated.
Audit Findings: What Went Wrong with Sterilisation
The audit revealed critical shortcomings in the clinic's sterilisation and cleaning protocols. Dental instruments, which must be meticulously decontaminated to prevent cross-contamination between patients, were not adequately sterilised. This includes failures in the standard process where tools are first cleaned to remove debris, then subjected to high-pressure steam in an autoclave at temperatures exceeding 121 degrees Celsius for at least 15-20 minutes to kill all pathogens.
Compounding the issue was poor record-keeping, which has made it impossible for authorities to directly notify all affected individuals. As a result, NSW Health has turned to a broad public appeal, asking anyone who received treatment at the clinic—especially those undergoing invasive procedures like extractions, root canals, or scaling where instruments pierce gums or draw blood—to come forward.
Dr Leena Gupta, Clinical Director of Public Health at Sydney Local Health District, stated, "The poor infection control practices at Dr Tam's practice means all former patients may be at low risk of a blood-borne virus infection, which can have serious and long-lasting health impacts." She highlighted that patients with invasive treatments face a slightly elevated risk, though overall transmission probability remains minimal.
Understanding Bloodborne Viruses: HBV, HCV, and HIV
Bloodborne viruses (BBVs) are pathogens transmitted primarily through contact with infected blood or bodily fluids. In a dental setting, the primary concern arises if contaminated instruments are reused without proper sterilisation, allowing microscopic amounts of blood from one patient to transfer to another.
- Hepatitis B Virus (HBV): A highly infectious liver virus. Acute infections often resolve, but chronic cases (affecting about 1-10% of adults) can lead to cirrhosis or liver cancer. Australia has a low prevalence, with around 1.2 notifications per 100,000 people annually, thanks to widespread vaccination. HBV is 50-100 times more infectious than HIV.
- Hepatitis C Virus (HCV): Primarily chronic, affecting the liver similarly to HBV. About 75% of infections become chronic without treatment. Curable today with direct-acting antivirals in 8-12 weeks. Prevalence in Australia is higher among certain groups, at roughly 0.5-1% of the population.
- Human Immunodeficiency Virus (HIV): Attacks the immune system, potentially leading to AIDS if untreated. Modern antiretrovirals make it a manageable chronic condition with near-normal life expectancy. Australia's notification rate is low at 4-5 per 100,000.
Transmission risk in dentistry is rare with proper protocols but spikes with breaches. Historical data shows no confirmed patient-to-patient transmissions in similar Australian cases, though healthcare workers face occupational risks.
Step-by-Step Guide: What Patients Should Do Now
- Confirm Exposure: If you visited Suite B, 2 Albert Road, Strathfield for dental work anytime in the last 25 years, assume potential exposure.
- Contact Your GP: Book an appointment immediately. Tests are bulk-billed under Medicare and confidential.
- Get Tested: Simple blood draw screens for HBV, HCV, HIV. Results in days; follow-up if positive.
- Call Healthdirect: Free advice 24/7 on 1800 022 222. They guide on next steps and support.
- Vaccinate if Needed: HBV vaccine available if unvaccinated; no vaccines for HCV/HIV.
- Monitor Health: Even if negative, note for future as window periods exist (weeks to months).
For more, visit the NSW Health Blood Borne Viruses page.
A Troubling Pattern: Past Dental Scandals in Sydney
This isn't the first time Sydney dentistry has faced such scrutiny. In October 2025, patients of Safuan Hasic in Mortdale were urged to test after infection control breaches. In 2018, Dr James Pok-Yan Ng's Haberfield practice exposed up to 10,000 patients. The most notable was 2015, involving two practices where 13,400 patients were notified. An NSW Health investigation found 9 positives (5 HBV, 3 HCV, 1 HIV), all attributable to other risk factors—no practice-linked transmissions.
Read the full 2016 NSW Health dental investigation report for insights into protocols and outcomes.
These incidents highlight systemic vulnerabilities despite guidelines from the Australian Dental Association (ADA) and Dental Board of Australia (AHPRA).
Regulatory Oversight: Dental Council and AHPRA's Role
The Dental Council of NSW, under AHPRA, conducts audits and handles complaints. Breaches lead to suspensions or deregistration, as with Dr Tam. The ADA's Infection Prevention and Control Guidelines mandate daily spore testing of autoclaves, single-use items where possible, and full barrier precautions.
| Regulatory Body | Key Responsibilities |
|---|---|
| Dental Board of Australia (AHPRA) | Registration, standards, audits |
| Dental Council NSW | Local complaints, inspections |
| NSW Health Public Health Units | Outbreak response, patient alerts |
Post-incident, councils ramp up random audits, but experts call for more frequent unannounced checks.
Expert Perspectives on Dental Safety
Dr Gupta reiterated, "Patients who underwent invasive dental procedures would be at a slightly higher risk, but overall, the risk is still considered to be low." Infection control experts note that heat sterilization kills BBVs reliably, but lapses like inadequate cycles or loading errors create gaps.
Professor Michael Schifter, past commentator on similar cases, emphasized that while patient-to-patient transmission is exceedingly rare, public alerts ensure peace of mind and early detection.
A 2024 review confirms dental workers' BBV risk is low with vaccination and protocols, extending to patients.
Public Reaction and Social Media Buzz
News of the alert has sparked widespread concern on social platforms, with Sydneysiders sharing stories and urging others to check records. Many express shock at recurring issues, demanding stricter oversight. Health authorities report increased calls to hotlines, underscoring the alert's reach.
Preventing Future Risks: Best Practices in Dentistry
- Clean instruments ultrasonically before autoclaving.
- Use biological indicators weekly.
- Maintain detailed patient logs.
- Train staff annually on protocols.
- Report incidents promptly to AHPRA.
The ADA provides free resources for compliance. Patients can ask clinics about sterilisation logs.
Implications for Dental Care in Australia
This case prompts questions about national standards. With Medicare covering dental for vulnerable groups, trust is paramount. Potential reforms include mandatory digital records and AI-monitored autoclaves. Meanwhile, vaccination drives continue to shield against HBV.
Looking Ahead: Assurance and Action
While alarming, history shows minimal actual harm. Act now: test, vaccinate, choose compliant providers via AHPRA register. NSW Health assures support throughout.
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