Parvo virus first seen in1978 infecting domestic dogs in North America.
next decade the virus spread across the continent and into other
regions. The virus has unknown origins but most theories point to a
change in the Feline Panleukapenia virus or a related virus that causes
enteritis in mink.1 As this was a new virus most dogs were
susceptible. This vulnerability
resulted in the death of many animals particularly young or
Considerable research has been devoted to sequencing and determining the antigenic structure of the virus. It is hoped that by studying the sequence of the virus researchers can learn how the virus changed and was able to infect different species. The structure of the virus also helps in the development of new and more effective vaccines.
to widespread use of parvo
vaccines the virus is less commonly seen. Cases of parvo are now seen
usually in unvaccinated young puppies. Some breeds, despite
appear to be susceptible to the virus such as Rottweillers and
Doberman Pinschers.2 On occasion vaccines do not induce
common reason for this is the presence of maternal antibodies
interfering with the vaccine.
infected with parvo
generally show signs consistent with gastroenteritis. This includes
vomiting, diarrhea, refusal of food and signs of dehydration.
Sometimes if a very young animal is infected the myocardium is damaged
and in some cases this can be fatal.