PMID- 21368558 OWN - NLM STAT- MEDLINE DCOM- 20110614 LR - 20220408 IS - 1976-555X (Electronic) IS - 1229-845X (Print) IS - 1229-845X (Linking) VI - 12 IP - 1 DP - 2011 Mar TI - Epidemiological characteristics of pulmonary pneumocystosis and concurrent infections in pigs in Jeju Island, Korea. PG - 15-9 AB - Epidemiological characteristics of swine pulmonary Pneumocystis (P.) carinii and concurrent infections were surveyed on Jeju Island, Korea, within a designated period in 172 pigs submitted from 54 farms to the Department of Veterinary Medicine, Jeju National University. The submitted cases were evaluated by histopathology, immunohistochemistry, PCR/RT-PCR, and bacteriology. P. carinii infection was confirmed in 39 (22.7%) of the 172 pigs. Histopathologically, the lungs had moderate to severe lymphohistioctyic interstitial pneumonia with variable numbers of fungal organisms within lesions. Furthermore, porcine reproductive and respiratory syndrome virus (PRRSV) and porcine circovirus type 2 (PCV-2) co-infection was a common phenomenon (12.8%, 20.5%, and 48.7% were positive for PRRS, PCV-2, or both, respectively, as determined by PCR/RT-PCR). Infection was much more concentrated during winter (December to March) and 53.8% of the infected pigs were 7- to 8-weeks old. In addition, three pigs showed co-infection with bacteria such as Pasteurella multocida and Streptococcus suis. The results of the present study suggest that the secondary P. carinii infection is common following primary viral infection in swine in Korea. They further suggest that co-infection of P. carinii might be enhanced by the virulence of primary pathogens or might have synergistic effects in the pigs with chronic wasting diseases. FAU - Kim, Ki-Seung AU - Kim KS AD - College of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju 690-756, Korea. FAU - Jung, Ji-Youl AU - Jung JY FAU - Kim, Jae-Hoon AU - Kim JH FAU - Kang, Sang-Chul AU - Kang SC FAU - Hwang, Eui-Kyung AU - Hwang EK FAU - Park, Bong-Kyun AU - Park BK FAU - Kim, Dae-Yong AU - Kim DY FAU - Kim, Jae-Hoon AU - Kim JH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Korea (South) TA - J Vet Sci JT - Journal of veterinary science JID - 100964185 SB - IM MH - Aging MH - Animals MH - *Circovirus/pathogenicity MH - Incidence MH - Pasteurella Infections/complications/epidemiology/veterinary MH - Pasteurella multocida/isolation & purification MH - *Pneumocystis carinii/immunology/pathogenicity MH - Pneumonia, Pneumocystis/complications/epidemiology/physiopathology/*veterinary MH - Porcine Postweaning Multisystemic Wasting Syndrome/complications/*epidemiology MH - Porcine Reproductive and Respiratory Syndrome/*epidemiology MH - *Porcine respiratory and reproductive syndrome virus/pathogenicity MH - Prevalence MH - Republic of Korea/epidemiology MH - Reverse Transcriptase Polymerase Chain Reaction MH - Seasons MH - Streptococcal Infections/complications/epidemiology/veterinary MH - Streptococcus suis/isolation & purification MH - Sus scrofa MH - Swine Diseases/epidemiology/virology PMC - PMC3053462 EDAT- 2011/03/04 06:00 MHDA- 2011/06/15 06:00 PMCR- 2011/03/01 CRDT- 2011/03/04 06:00 PHST- 2011/03/04 06:00 [entrez] PHST- 2011/03/04 06:00 [pubmed] PHST- 2011/06/15 06:00 [medline] PHST- 2011/03/01 00:00 [pmc-release] AID - 201103015 [pii] AID - 10.4142/jvs.2011.12.1.15 [doi] PST - ppublish SO - J Vet Sci. 2011 Mar;12(1):15-9. doi: 10.4142/jvs.2011.12.1.15.