DOROTA POLZ-GRUSZKA1*, KAMAL MORSHED2, ADRIAN JARZYŃSKI1 and MAŁGORZATA POLZ-DACEWICZ1 1Department of Virology, Medical University, Lublin, Poland 2Chair and Department of Otolaryngology and Laryngological Oncology, Medical University Lublin, Poland *Corresponding author: D. Polz-Gruszka, Department of Virology, Medical University of Lublin, Lublin, Poland; e-mail: dorota....