[Three cases of postweaning multisystemic wasting syndrome (PMWS) due to porcine circovirus type 2 (PCV 2) in Switzerland].

Porcine circovirus type 2 (PCV 2) was found in three five- and nine-week-old pigs from two feeder pig producer farms. Clinical signs were persistent diarrhea and wasting. The animals showed histomorphologic changes characteristic for "Postweaning Multisystemic Syndrome" (PMWS). One animal had the typical basophilic intracytoplasmatic circoviral inclusion bodies in the Peyer's patches of the ileum. Circoviral DNA was detected in the lymphatic organs as well as in the liver. This case report is the first description of PCV 2 in Switzerland.