1. Leptospirosis in the Tropics and in Travelers;Jessica N. Ricaldi;Curr Infect Dis,2006
2. Epidemiological features of leptospirosis in Ukraine in present time;OP Selnikova;Infectious Diseases,2002
3. Ecological and epidemiological aspects of leptospirosis in Ukraine;NO Vynograd;Practical Medicine,2005
4. Annual report of the Main Department of Statistics in the Lviv Region. 2018; 6. http://www.lv.ukrstat.gov.ua/ukr/themes/19/theme_19_2_01.php?code=19&ind_page=stattables. Bulletin of
5. Ukraine Today. Official site of Rada. 2018; 1. http://www.rada.com.ua/ukr/RegionsPotential/Lviv.