Changing patterns of hepatitis A virus infection in children in Palermo, Italy

Area of Science:

• Epidemiology
• Public Health
• Virology

Background:

• Hepatitis A virus (HAV) infection poses a significant public health concern globally.
• Understanding the prevalence and risk factors of HAV infection is crucial for targeted prevention strategies.

Purpose of the Study:

• To determine the prevalence of antibodies to hepatitis A virus (anti-HAV) in children in Palermo, Italy in 1988.
• To compare current prevalence with historical data from 1978.
• To identify socio-demographic factors associated with HAV infection in children.

Main Methods:

• A cross-sectional seroprevalence survey was conducted in 1988 involving 490 children aged 6-13 years in Palermo.
• Blood samples were analyzed for the presence of anti-HAV antibodies.
• Statistical analysis was performed to compare prevalence rates and identify risk factors, including father's education and family size.

Main Results:

• The overall prevalence of anti-HAV antibodies in 1988 was 10.6%, with higher rates in older children (11-13 years) compared to younger ones (6-10 years).
• A significant reduction in anti-HAV prevalence was observed compared to a 1978 survey.
• Lower paternal education and larger family size were significantly associated with increased risk of past HAV infection.

Conclusions:

• HAV exposure in children in Palermo has significantly decreased, likely due to improved socio-economic conditions.
• Socio-demographic factors remain important determinants of HAV infection risk.
• Continued surveillance and targeted interventions may be necessary to maintain low prevalence rates.