GRZEGORZ MADAJCZAK1*, BOŻENA DERA-TOMASZEWSKA2, MONIKA WASIAK1, ANNA CHRÓST1 and JOLANTA SZYCH1 1Department of Bacteriology, National Institute of Public Health – National Institute of Hygiene, Warsaw, Poland 2Department of Medical Microbiology, Medical University of Gdańsk, Gdańsk, Poland *Corresponding author: G. Madajczak, Department of Bacteriology, National Institut...