Coexistence of two occupational infectious diseases in one patient - borreliosis and tick-borne encephalitis - a case report - Krzyczmanik, Dariusz; Rybacki, Marcin; Wittczak, Tomasz; Dudek, Wojciech; Świerczyńska-Machura, Dominika; Pałczyński, Cezary; Walusiak-Skorupa, Jolanta (Nofer Institute of Occupational Medicine)