PMID- 10649626 OWN - NLM STAT- MEDLINE DCOM- 20000322 LR - 20220318 IS - 0264-410X (Print) IS - 0264-410X (Linking) VI - 18 IP - 13 DP - 2000 Jan 18 TI - Effect of vaccination on the potentiation of porcine reproductive and respiratory syndrome virus (PRRSV)-induced pneumonia by Mycoplasma hyopneumoniae. PG - 1244-52 AB - Porcine reproductive and respiratory syndrome virus (PRRSV) and Mycoplasma hyopneumoniae are frequently isolated pathogens from pigs with respiratory disease. A previous study conducted in our laboratory found that infection with M. hyopneumoniae increased the duration and severity of respiratory disease induced by PRRSV. The purpose of this experiment was to determine whether vaccination against M. hyopneumoniae and/or PRRSV decreased the enhancement of PRRSV-induced pneumonia. Both M. hyopneumoniae bacterin and PRRSV vaccine decreased the severity of clinical respiratory disease. Infection or vaccination with PRRSV appeared to decrease the efficacy of the M. hyopneumoniae bacterin. Vaccination with M. hyopneumoniae bacterin decreased the potentiation of PRRSV-induced pneumonia observed in the dual infected pigs. However, PRRSV vaccination in combination with M. hyopneumoniae bacterin eliminated this benefit and the amount of pneumonia induced by PRRSV increased. PRRSV vaccine alone did not decrease the potentiation of PRRSV pneumonia by M. hyopneumoniae. FAU - Thacker, E L AU - Thacker EL AD - Veterinary Medical Research Institute, Iowa State University, Ames 50011, USA. ethacker@iastate.edu FAU - Thacker, B J AU - Thacker BJ FAU - Young, T F AU - Young TF FAU - Halbur, P G AU - Halbur PG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Vaccine JT - Vaccine JID - 8406899 RN - 0 (Antibodies, Bacterial) RN - 0 (Bacterial Vaccines) RN - 0 (Immunoglobulin G) RN - 0 (Viral Vaccines) SB - IM MH - Animals MH - Antibodies, Bacterial/biosynthesis/blood MH - Antibody Specificity MH - Bacterial Vaccines/immunology/*therapeutic use MH - Bronchoalveolar Lavage Fluid/immunology MH - Immunoglobulin G/biosynthesis/blood MH - Lung/immunology/microbiology/pathology/virology MH - Mycoplasma/*immunology/isolation & purification MH - Pneumonia of Swine, Mycoplasmal/immunology/prevention & control/*veterinary MH - Pneumonia, Viral/immunology/*veterinary MH - Porcine Reproductive and Respiratory Syndrome/*immunology/microbiology/prevention & control MH - Porcine respiratory and reproductive syndrome virus/*immunology/isolation & purification MH - Random Allocation MH - Swine MH - Swine Diseases/immunology/microbiology/*prevention & control MH - Viral Vaccines/immunology/*therapeutic use EDAT- 2000/01/29 09:00 MHDA- 2000/03/25 09:00 CRDT- 2000/01/29 09:00 PHST- 2000/01/29 09:00 [pubmed] PHST- 2000/03/25 09:00 [medline] PHST- 2000/01/29 09:00 [entrez] AID - S0264-410X(99)00395-3 [pii] AID - 10.1016/s0264-410x(99)00395-3 [doi] PST - ppublish SO - Vaccine. 2000 Jan 18;18(13):1244-52. doi: 10.1016/s0264-410x(99)00395-3.