Isolated bacteria from subcutaneous abscesses in infested goats with Przhevalskiana species

Przhevalskiana is a Diptera from the Oestridae family; its larvae are a major cause of subcutaneous myiasis in goats in many European and Asian countries. In addition to reducing animal production, the main economic losses due to this myiasis are perforation of the goats' skin and its subsequent decrease in the value. Involvement of secondary bacterial agents following penetration of larvae into the skin and formation of subcutaneous abscesses that can result in death of the animals has been little investigated. Therefore, a decision was made to assess the necessity of prophylaxis and the adoption of a more specific treatment by isolation and recognition of the bacterial agents and fly species involved in the formation of this type of abscess. Of the 434 inspected goats, 57 goats (13.13%) were infested with larvae of this fly. Additionally, 11 subcutaneous abscesses were diagnosed in infested goats and 22 larvae were isolated from these abscesses. Parasitological studies revealed that 18 larvae belonged to Przhevalskiana crossii (81.81%) and the remaining four larvae belonged to Przhevalskiana silenus (18.18%). Following bacteriological examinations, five species were isolated from the subcutaneous abscesses produced by Przhevalskiana larvae: Staphylococcus epidermidis from six abscesses, Escherichia coli from four abscesses, Staphylococcus aureus from two abscesses, Streptococcus pyogenes from two abscesses, and Klebsiella pneumoniae from one abscess.