Parvovirus is the most common viral cause of diarrhea in young puppies. Based on the analysis of a partial VP2 sequence of 54 samples, canine parvovirus type 2c (CPV-2c) ( n = 26), CPV-2b ( n = 25), and CPV-2 ( n = 3) were detected in the United States. The American CPV-2b isolates have unique codons (494 and 572) in VP2.

interpretation to help establish a potential cause. Cases arising in the countries detailed below should initially be reported to the relevant contact (England and Wales-Tim Crawshaw; Scotland-Fiona Howie; Republic of Ireland-Maire McElroy; Northern Ireland-Tony Patterson; the Netherlands-Klaas Peperkamp). We are happy to collaborate with other pathologists who would like to assist in the investigation of this condition and can make our protocols available on request.