**Acknowledgements**

The authors would like to express their warmest thanks to Ioana Adriana Matei-Buzura, who had helped with an excellent advice and statistical analyses; to all of our colleagues from Infectious Diseases, Microbiology, Parasitology, Necropsy, Morphopathology, Reproduction and Internal Diseases departments; and, last but not least, to the emergency hospital from the University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania, all who had helped with all the financial, moral, and logistic support.
