PMID- 9618874 OWN - NLM STAT- MEDLINE DCOM- 19980814 LR - 20190702 IS - 0042-4900 (Print) IS - 0042-4900 (Linking) VI - 142 IP - 19 DP - 1998 May 9 TI - Effect on viraemia of an American and a European serotype PRRSV vaccine after challenge with European wild-type strains of the virus. PG - 510-2 AB - Three groups of 10 pigs were vaccinated with an American serotype porcine reproductive and respiratory syndrome virus (PRRSV) vaccine and three groups of 10 pigs were vaccinated with a European serotype PRRSV vaccine. A control group of 12 pigs was left unvaccinated. Four weeks after vaccination the PRRSV-specific antibody titres were determined and each group was challenged with either a Spanish, German or Dutch PRRSV wild-type strain. The serological responses four weeks after vaccination confirmed that the two vaccines were of different serotypes. Vaccination with the American serotype vaccine hardly reduced the level of viraemia after challenge with the European PRRSV wild-type strains, and only after challenge with the Spanish PRRSV strain was a moderate, statistically significant reduction in viraemia observed. In contrast, after vaccination with the European serotype vaccine, viraemia was completely suppressed after challenge with the German PRRSV isolate and almost completely suppressed after challenge with the Spanish and Dutch PRRSV isolates. FAU - van Woensel, P A AU - van Woensel PA AD - Intervet International BV, Boxmeer, The Netherlands. FAU - Liefkens, K AU - Liefkens K FAU - Demaret, S AU - Demaret S LA - eng PT - Journal Article PL - England TA - Vet Rec JT - The Veterinary record JID - 0031164 RN - 0 (Viral Vaccines) SB - IM MH - Animals MH - Europe MH - Porcine Reproductive and Respiratory Syndrome/*prevention & control/virology MH - Porcine respiratory and reproductive syndrome virus/*immunology MH - Swine MH - United States MH - Vaccination/veterinary MH - Viral Vaccines/*therapeutic use MH - Viremia/prevention & control/*veterinary EDAT- 1998/06/10 00:00 MHDA- 1998/06/10 00:01 CRDT- 1998/06/10 00:00 PHST- 1998/06/10 00:00 [pubmed] PHST- 1998/06/10 00:01 [medline] PHST- 1998/06/10 00:00 [entrez] AID - 10.1136/vr.142.19.510 [doi] PST - ppublish SO - Vet Rec. 1998 May 9;142(19):510-2. doi: 10.1136/vr.142.19.510.