My research interests are in immunology and parasitology.I am currently studying the mechanisms involved in immune defence against parasitic invasions and in the formation of the balance between host and parasite in wild animal populations - using the invasion of the blood sucking nematode Ashworthius sidemi in European bison (Bison bonasus) in Białowieża Forest as a case study. Another topic of the research is to study parasitofauna of: carnivores in the Białowieża Forest and American mink (Neovison vison) in five Polish national parks. Recently I discovered Spirometra erinaceieuropaei tapeworm in badger, raccoon dog and wild boar. This tapeworm is rarely investigated parasite in Europe and, as indicated by preliminary research, often occurs in north-eastern Poland. It can be a potential threat to humans in connection with the consumption of wild boar meat.