The helminth fauna of the common shrew from sites in Karelia logged at different times was surveyed. Changes in the plant cover in the felled sites was not found to produce any significant effect on the number of helminth species, but parameters of host infection with specific parasite species differed notably. Invasion values were the highest in shrews from a recently felled site. The helminth fauna of the shrew is made up of species belonging to different domination categories. The structure of the helminth fauna depends on the time since logging. A redistribution has occurred among the species forming the core of the helminth fauna. The conclusion is drawn that the species diversity of helminths and its structure reflect changes in the abundance and dominance of certain species of terrestrial invertebrates and vertebrates in felled sites.