Hepatitis A in Poland in 2012.

Area of Science:

• Epidemiology
• Public Health
• Infectious Diseases

Background:

• Hepatitis A remains a public health concern globally.
• Understanding the epidemiological trends of Hepatitis A is crucial for effective control strategies.

Purpose of the Study:

• To evaluate the epidemiological situation of Hepatitis A in Poland during 2012.
• To identify key trends and risk factors associated with Hepatitis A transmission.

Main Methods:

• Analysis of annual bulletins on infectious diseases and vaccinations in Poland for 2012.
• Review of individual case reports and outbreak investigations of Hepatitis A.
• Data collected by Epidemiological Departments and analyzed by the Department of Epidemiology at NIPH-NIH.

Main Results:

• 71 cases of Hepatitis A were reported in Poland in 2012, with an incidence of 0.17 per 100,000 population.
• The incidence varied regionally, with the highest in Śląskie (0.35/100,000) and lowest in Łódzkie and Podlaskie (0.08/100,000).
• Imported cases accounted for 52.1% of all cases, and five outbreaks involving 11 cases were recorded.

Conclusions:

• A slight increase in Hepatitis A incidence was observed in 2012 compared to the previous year, though overall endemicity remains low.
• The low vaccination rates and decreased incidence contribute to a growing susceptible population, posing a risk for future outbreaks.
• Despite the current favorable epidemiological situation, continuous monitoring and analysis within the national surveillance system are essential for Hepatitis A control.