CD79A and tick-borne encephalitis: Further specific tests for IgA, CrP, and TBE-Ab (IgG) in CSF, along with PCR for distemper, Anaplasma phagocytophilum, Neospora caninum, and Toxoplasma gondii, were all negative, supporting a non-inflammatory and non-infectious etiology for the neurological signs observed.