DENTAL CLINICS: A RESERVOIR FOR HEPATITIS C VIRUS

Area of Science:

• Infectious Diseases
• Hepatology
• Dental Public Health

Background:

• Nosocomial transmission of Hepatitis C Virus (HCV) is a recognized concern.
• The specific role of dental care settings in HCV transmission has been difficult to quantify.
• High HCV prevalence in middle-income countries necessitates investigation into potential transmission routes.

Purpose of the Study:

• To investigate the potential for nosocomial transmission of HCV within dental clinics.
• To assess the prevalence of HCV infection among dental healthcare workers (DHCWs).
• To conduct environmental testing for HCV RNA in dental clinic settings.

Main Methods:

• Recruited 196 dental healthcare workers (doctors, nurses, residents) from 13 clinics in 3 cities.
• Collected blood samples for anti-HCV testing and administered risk behavior questionnaires.
• Performed environmental testing for HCV RNA in 37 private dental clinics.

Main Results:

• The seroprevalence of anti-HCV among participating DHCWs was 4%.
• HCV RNA was detected in 62.2% of the environmental samples from dental clinics.
• Suction units (37.8%) and general dental rooms (24.3%) were the most frequently contaminated locations.

Conclusions:

• Dental clinics can harbor viable HCV RNA, posing a risk for nosocomial transmission.
• Contaminated dental equipment, particularly suction units, is a potential source of HCV exposure.
• Rigorous adherence to infection control procedures is essential to prevent HCV transmission in dental care.