Microbiological Examination of the Lungs and Tonsils from Fatal Cases of Porcine Reproductive and Respiratory Syndrome

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  • 豚繁殖・呼吸障害症候群死亡豚呼吸器からの病原体分離
  • ブタ ハンショク コキュウ ショウガイ ショウコウグン シボウ ブタ コキュウ

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Abstract

The lungs and tonsils from fatal cases of porcine reproductive and respiratory syndrome (PRRS) were examined microbiologically. PRRS viruses were isolated from 17 of 20 (85%) lung and 8 of 11 (72.7%) tonsil samples. Of PRRS virus-positive cases, Mycoplasma hyorhinis was isolated from the ten lung samples, while Aujeszky's disease virus was isolated from the lung or tonsil of two cases. From eight lung samples, Actinobacillus pleuropneumoniae serotype 2, Haemophilus parasuis and/or Pasteurella multocida were also isolated. These results suggested that other viral and/or bacterial superinfection might be involved in fatal cases of PRRS.

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