These Parvo in humans informational news feeds and education links feature updated information about Parvo Virus and Parvo Vaccine.

Educational information compiled as an educational resource for dog owners. If you have questions about Parvo virus or your dog's health, please consult with your veterinarian. The author is unable to reply to inquiries about parvo or other veterinary health issues.

Transmission to humans: Fifth disease (erythema infectiosum) is a viral illness caused by Parvovirus B19. Fifth disease is caused by infection with human parvovirus B19. This virus infects only humans. Pet dogs or cats may be immunized against "parvovirus," but these are animal parvoviruses that do not infect humans. Therefore, a child cannot "catch" parvovirus from a pet dog or cat, and a pet cat or dog cannot catch human parvovirus B19 from an ill child. (Center for Disease Control).

Transmission to other species: Upon microscopic examination, Canine Parvovirus (CPV) resembles Feline Panleukopenia Virus (FLPV) and mink enterits (MEV), a mutant of feline panleukopenia. The origin of canine parvovirus is unknown, but it has been theorized that it is a genetic mutation of feline panleukopenia. These two viruses react similarly in serum and resemble each other physically. Microbial research suggests a possibility that CPV and FPLV undergo mutual interspecies transmission between dogs and cats, and it is postulated that they may cause disease in some adventitious hosts. (J Clin Microbiol. 1996 Sep;34(9):2101-5; Mochizuki M, Horiuchi M, Hiragi H, San Gabriel MC, Yasuda N, Uno T., Laboratory of Veterinary Microbiology, Faculty of Agriculture, Kagoshima, Japan.)

Recently it has been shown that occasionally canine parvovirus can infect cats. (Companion Animal Diagnostics, University of Glascow, Veterinary Diagnostics Services, Bearsden, Glasgow; October 8, 2001.) Canine parvovirus (CPV, CPV-2) and feline panleukopenia virus (FPV) are very closely related and are important pathogens of their respective hosts, the dog and cat. CPV-2 infects dogs and other Canidae such as wolves, coyotes, South American dogs and Asiatic raccoon dogs, but not cats. FPV and the FPV-like viruses infect both large and small cats, as well as mink, raccoons, and possibly foxes, but not dogs. However, the clear separation of a cat virus infecting only cats (FPV) and a dog virus infecting only dogs (CPV-2) is no longer certain as the original dog virus, CPV-2 was transitory, and replaced in nature by so-called "new antigenic types" (CPV-2a and CPV-2b) that infect or replicate in, and are transmitted between, dogs and cats. (U. Truyen, Institt fr Med Mikrobiologie, Infektions-und Seuchenmedizin, Ludwig-Maximillians Universitt, Tierrztliche Fakultt, Veterinrstrasse 13, D-80539 Mnchen, Deutschland; January 26, 2000.)

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