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Canine Parvovirus: symptoms, prevention & care

17.7K reads· 2026-07-21
Canine Parvovirus: symptoms, prevention & care

Canine parvovirus type 2 (CPV2) is an infectious virus that mainly infects dogs. The disease is highly contagious. The disease is spread between dogs through direct or indirect contact with their feces. No maternal resistance…

Canine parvovirus type 2 (CPV2) is an infectious virus that mainly infects dogs. The disease is highly contagious. The disease is spread between dogs through direct or indirect contact with their feces.没有母源抗体或疫苗保护的幼犬的症状尤为严重。该病有两种表现型:心肌炎型与肠炎型。肠炎型的共同症状为严重的呕吐与严重的出血性腹泻。心肌炎型可以导致幼犬呼吸与心血管的衰竭。 The disease generally requires hospitalization.疫苗可以防止该病感染,但感染后未经治疗该病死亡率可高达91%。 犬细小病毒有两种类型:CPV1(又名 canine minute virus)和CPV2。 CPV2引起了这种最严重的疾病,家犬和野生犬类动物均可感染。 CPV2有3种变异型:在CPV-2a、CPV-2b和CPV-2c。 2a和2b型与CPV2原型的区别在于其毒力,它们还具有感染猫导致发病的能力。 2c是CPV-2新分离出的变异型,其与2b类似。 2c的病毒蛋白与2b有一个氨基酸不同,但这个区别被认为是具有重要意义的。欧洲、美洲和亚洲部分地区都曾分离出2c毒株。该毒株的出现曾导致犬免疫无效的断言,但研究证明现有疫苗对于CPV-2c仍能提供足够的保护水平。

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