To monitor the situation in the CR, samples were collected from a total of 138 common and koi carps in seven and eight
locations in CR respectively, and were examined between 2005 and 2006. Locations owned by the major producers
of common and koi carp were selected with respect of potential occurrence of the KHV virus. No records of
increased mortality and morbidity were noticed there. Preferentially carps with non-specific symptoms of disease
were sampled, often with isolated skin erosions. To obtain detailed picture about health condition of examined
fish the bacteriological and haematological examinations were accomplished.