The frequency of occurrence anti-HAV antibodies to health employees – own observations.

Introduction: In the years 1997-2016, Poland was counted among the countries with a low and very low endemicity of hepatitis A. Based on the epidemiological data from NIZP–PZH (National Institute of Public Health - National Institute of Hygiene), since 2017, an increase in the incidence of hepatitis A has been observed in Poland. Considering the low number of cases by 2016 and a high percentage of seronegative persons, an increased risk of HAV infections should be expected.

Acute diarrhoea induced by rotavirus in children hospitalysed in Provincial Hospital for Infectious Diseases in Bydgoszcz in 2014 year.

Objective: The aim of the present study was to describe the epidemiology and course of rotavirus infection in children hospitalized at the T. Browicz Provincial Hospital for Infectious Diseases in Bydgoszcz, Poland in 2014 year.

Introduction: Rotavirus infection is responsible for over 2 millions hospitalizations per year among children under 5 year old.