Isolation of Porcine Reproductive and Respiratory Syndrome (PRRS) Virus from Heko-Heko Disease of Pigs.

Shimizu, Mitsugu; Yamada, Shunji; Murakami, Yosuke; Morozumi, Tatsuya; Kobayashi, Hideki; Mitani, Kenji; Ito, Nobuyosi; Kubo, Michinori; Kimura, Kumiko; Kobayashi, Mitsuo; Yamamoto, Koushi; Miura, Yasuo; Yamamoto, Teruji; Watanabe, Kazuo

doi:10.1292/jvms.56.389

Cited by 56 publications

(40 citation statements)

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“…Field evidence, strongly suggests a role of PRRS virus in predisposing animals to secondary infection [5,10,12]. In some cases, the pigs, which had already been vaccinated with attenuated E. rhusiopathiae, were found moribund due to acute swine erysipelas and dual infection with PRRS virus.…”

Section: Discussionmentioning

confidence: 99%

“…For example, PRRS virus predisposes piglets to clinical disease caused by Streptococcus suis serotype 2 [2]. The interaction between PRRS virus and Mycoplasma hyorhinis in hysterectomyproduced and colostrum-deprived pigs has been recognized [12]. In other experimental studies, no differences have been found in clinical signs and lung lesions of pigs coinoculated with PRRS virus and Mycoplasma hyopneumoniae [14] or other bacteria [1].…”

Section: Discussionmentioning

confidence: 99%

“…Reproductive disturbance in sows and respiratory distress in growing pigs were encountered around 1987 due to the outbreaks of porcine reproductive and respiratory syndrome (PRRS), and PRRS virus was isolated in 1993 [6,12]. It has been believed that PRRS was associated with other microbial infections in growing pigs [10,12].…”

mentioning

confidence: 99%

“…It has been believed that PRRS was associated with other microbial infections in growing pigs [10,12]. Since 1988, in several large-scale pig farms infiltrated with PRRS virus, swine erysipelas broke out frequently even in 2-6-monthold pigs that had been vaccinated with commercially available attenuated E. rhusiopathiae vaccine (Hara, 1996, unpublished data).…”

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confidence: 99%

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Effect of Attenuated Erysipelothrix rhusiopathiae Vaccine in Pigs Infected with Porcine Reproductive Respiratory Syndrome Virus.

Sakano

Shibata

Namimatsu

et al. 1997

The Journal of Veterinary Medical Science

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ABSTRACT. Twenty 2nd specific pathogen-free pigs were divided into 4 groups: Group A were infected with porcine reproductive and respiratory syndrome (PRRS) virus at 6 weeks of age and treated with available swine erysipelas and swine fever combined vaccine (vaccinated) at 7 weeks of age; Group B were vaccinated at 7 weeks of age and infected with PRRS virus at 8 weeks of age; Group C were vaccinated at 7 weeks of age: Group D were neither vaccinated nor infected with PRRS virus. All pigs were challenged to Erysipelothrix rhusiopathiae C42 strain at 10 weeks of age. No clinical signs appeared after vaccination of group A and B pigs, thus confirming that the safety of the vaccine was not influenced by infection with PRRS virus. None of the pigs in Groups A and C developed erysipelas after challenge exposure to E. rhusiopathiae. In contrast, fever and/or urticaria appeared transiently in all pigs of Group B after challenge exposure. At the time of challenge exposure to E. rhusiopathiae, the PRRS virus titer was high in sera of Group B, but was low in those from Group A. However, vaccination of pigs with attenuated E. rhusiopathiae was effective in dual infection with PRRS virus and E. rhusiopathiae, because the clinical signs were milder and the E. rhusiopathiae strain was less recovered from these pigs compared to pigs of group D. -KEY WORDS: Erysipelothrix rhusiopathiae, experimental infection, PRRS, swine, vaccine.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Effect of Attenuated Erysipelothrix rhusiopathiae Vaccine in Pigs Infected with Porcine Reproductive Respiratory Syndrome Virus.

Sakano

Shibata

Namimatsu

et al. 1997

The Journal of Veterinary Medical Science

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“…This has caused serious economic loss to pig farming industries due to the decreased growth rate of weaning piglets and the reproduction abnormalities [18,19]. In Japan, PRRS has been reported since 1993 [15,20] and the reported data show a high prevalence rate [2]. In many commercial farms in the world, some endemic respiratory diseases cause a mixed infection called porcine respiratory disease complex (PRDC), and PRRS is one of the most basic parts of PRDC [4,21].…”

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confidence: 99%

Evaluation of Enzyme-Linked Immunosorbent Assay (ELISA)and Immunofluorescent Antibody (IFA) Test for the Detection of Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) Antibody in Pigs from Conventional Farms.

Yahara¹,

Ohkubo²,

Kariwa

et al. 2002

J. Vet. Med. Sci.

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ABSTRACT. To evaluate the immunofluorescent antibody (IFA) test and enzyme-linked immunosorbent assay (ELISA) for detecting the porcine reproductive and respiratory syndrome virus (PRRSV) antibody, conventional pigs in PRRSV-positive and -negative commerci al farms were examined. Antibody development patterns in ELISA and IFA tests were compared in 3 week old piglets experimentally infected with the PRRSV. The virus was detected from 2 days post infection (PI) and then the antibody titers and S/P ratios rose by both methods. A total of 208 serum samples were collected from 4 PRRSV-negative farms and 210 samples from PRRSV-positive farms, and were tested for the PRRSV antibody by IFA and ELISA. The titer of 64 should be set as the cut-off point in IFA for field sera. Similarly, the cut-off S/P ratio should be set at 0.4 in ELISA. A high degree of correlation was observed between antibody titers by the two methods in these 418 samples, with a correlation coefficient of 0.84. The coincidence rate between the two tests was 84.7% (354/418). In non-coincident cases, ELISA was able to detect the antibody with a low titer in the serum samples which were negative in IFA but from PRRSV positive farms. ELISA was more sensitive than IFA to detect PRRSV infected animals or farms.

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Porcine Reproductive and Respiratory Syndrome Virus

Rajkhowa

2020

Livestock Diseases and Management

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Isolation of Porcine Reproductive and Respiratory Syndrome (PRRS) Virus from Heko-Heko Disease of Pigs.

Cited by 56 publications

References 0 publications

Effect of Attenuated Erysipelothrix rhusiopathiae Vaccine in Pigs Infected with Porcine Reproductive Respiratory Syndrome Virus.

Effect of Attenuated Erysipelothrix rhusiopathiae Vaccine in Pigs Infected with Porcine Reproductive Respiratory Syndrome Virus.

Evaluation of Enzyme-Linked Immunosorbent Assay (ELISA)and Immunofluorescent Antibody (IFA) Test for the Detection of Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) Antibody in Pigs from Conventional Farms.

Porcine Reproductive and Respiratory Syndrome Virus

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