Investigation of possible infection of wild-living birds taken from 37 species of passerine birds with avian influenza virus (AIV) and avian paramyxoviruses (APMV) was done. For the detection of both viruses isolation on chicken embryos and one-step reverse-transcription polymerase chain reaction (RT-PCR) was used. AIV nucleic acid was detected by RT-PCR in a sample of one common starling (Sturnus vulgaris). APMV 2 was isolated in one robin (Erithacus rubecula) sample.
The aim of the study was to determine which avian mycoplasma species possess neuraminidase enzymatic activity (NEAC). Namely, neuraminidases are considered virulence factors in many pathogenic microorganisms, including avian influenza viruses. Our study provides novel informations about NEAC in avian mycoplasma species and suggests that higher invasiveness and possibly, the pathological processes might be associated with their NEAC.