CCV infection generally causes only a mild diarrhoea, and older dogs often show no clinical signs. Younger dogs, up to 12 weeks of age, appear to show a greater susceptibility to the more severe forms of the disease.
Clinical features include:
- Incubation period of 1-5 days.
- Vomiting and diarrhoea are the predominant clinical signs.
- Depression, anorexia and lethargy may be a feature in some cases.
- Faeces vary from a cowpat-like consistency to watery. On occasions the diarrhoea may be haemorrhagic.
- Pyrexia and leucopenia are not features of CCV infection.
- Spontaneous recovery usually occurs 740 days after the onset of clinical signs, but diarrhoea may persist for up to 4 weeks.
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