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Signs and symptoms. The incubation period of CPV is generally 4-7 days. Individuals normally have severe enteritis, however occasionally, animals may only have mild symptoms. Signs usually consist of depression, severe vomiting, refusal of food and water, abdominal pain and profuse smelly, bloody diarrhoea.ause of canine parvovirus. The cause of canine parvovirus disease is a highly contagious DNA-containing virus. There are currently two types prevalent in the UK, namely CPV-2a and CPV-2b. The virus is transmitted through the mouth or nose from faeces.
From the time a cold virus enters the nose, it takes 8-12 hours for the viral reproductive cycle to be completed and for new cold virions to be shed (released) in nasal secretions. This time period is called the incubation period.here are over 200 viruses responsible for the common cold. According to the US Centers for Disease Control and Prevention (CDC), the incubation periods for a few of the most common causative viruses involved with the common cold are: Rhinovirus: 2-7 days. Coronaviruses: 2-10 days.