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CASE REPORTS
JOURNAL ARTICLE
First-Time Detection of Porcine Reproductive and Respiratory Syndrome Virus and Porcine Circovirus 2 in an Albanian Farrow-to-Finish Herd.
Viral Immunology 2018 June
The purpose of this case report is to describe for the first time concurrent porcine reproductive and respiratory syndrome virus (PRRSV) and porcine circovirus 2 (PCV-2) infections in a commercial farrow-to-finish pig farm in Albania, as well as the phylogenetical analysis of isolated PRRSV strain. The present study reports on a farrow-to-finish commercial pig farm, located in South Albania. In a percentage of about 40% of weaners in each batch (60-70 piglets per batch), clinical signs, including fever, severe respiratory signs, wasting, jaundice, rough hairy coat, palpable inguinal lymphadenopathy, and high mortality rate, were performed. The clinical signs of sows included sporadic premature farrowings (22%), with increased number of stillbirth (3.3%) and weak piglets (4.1%) based on the record system of the farm. Blood samples were obtained from 8 sows (4 lactating and 4 dry-period sows), 25 piglets of 5 different batches (5 at 15-20 days, 5 at 40 days, 5 at 50 days, 5 of 60 days, and 5 of 70 days), and 5 finishers of 130-150 days of age. Moreover, tissue samples were collected from five weaners at 20-70 days of age. Histopathological examination of lung and lymph node sections revealed findings compatible with PRRSV and PCV-2 infection. Pigs between 15 and 130-140 days of age were positive for type 1 (European) PRRSV and pigs between 50 and 130-140 days of age were positive for PCV-2. Blood serum samples were tested by real-time polymerase chain reaction (PCR) for PCV-2 and one real-time reverse transcription-PCR-positive sample was selected for subsequent complete ORF5 (Gp5) gene sequencing. The results of this case report confirm the detection of PRRSV and PCV-2 concurrent infection in an Albanian farrow-to-finish pig farm. The full-length ORF5 sequence of the detected PRRSV strain (named "Mursi/AL/15") was successfully determined, revealing high nucleotide identity with other type 1 European isolates.
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