The virus may cause epidemic polyarthritis which can be extremely debilitating. 病毒可能会导致疫情多发性关节炎，可以非常衰弱。
Haemophilus parasuis is a causative agent of swine polyserositis, polyarthritis and meningitis. 副猪嗜血杆菌（Haemophilus parasuis，HPS）能引起猪的多发性浆膜炎、关节炎和脑膜炎，随着世界养猪业的发展，该病已成为全球范围内影响养猪业的一种重要细菌学疾病。
We report a 56-year-old man, who had migratory polyarthritis for a half year, and who presented with fever, a flare-up of polyarthritis, proximal muscle weakness, and bloody stool. 我们报告一位56岁男性病患，主诉多发性关节炎约半年，接著病人遭受溃疡性结肠炎，多发性肌炎及肝炎。
