Patients of a former dentist in Brantford Ontario are being urged to undergo blood testing after an investigation found improper sterilization practices at the clinic.
The Brantford Expositor is reporting that Grand Erie Public Health notified an unknown number of patients who received care from Dr. George Chan, a long-time dentist whose office on St. Paul Avenue has since closed.
Medical Officer of Health Jason Malenfant issued letters advising former patients to be tested for hepatitis B, hepatitis C, and HIV. The health unit also provided pre-filled requisition forms to make the testing process easier through healthcare providers or walk-in clinics.
The investigation began after a complaint was received in late October 2025, prompting a detailed inspection in early November. According to an infection prevention and control report, multiple issues were identified, including improper use of gloves, inadequate disinfection practices, and improper storage of sterilized equipment.
The clinic has been permanently closed since the investigation.
Health officials say the risk of infection is considered low, but recommend precautionary testing for anyone who received dental care at the clinic within the past four years. Patients who underwent procedures after August 26, 2025 are advised to complete a second test after a six-month period.
In the meantime, the health unit is urging affected individuals to follow additional precautions, including avoiding activities that could increase the risk of blood exposure and transmission.
Officials say the situation highlights the importance of strict infection prevention and control standards in healthcare settings.