Abstract
Many Streptococcus suis isolates from porcine endocarditis in slaughterhouses have lost their capsule and are considered avirulent. However, we retrieved capsule- and virulence-recovered S. suis after in vivo passages of a nonencapsulated strain in mice, suggesting that nonencapsulated S. suis are still potentially hazardous for persons in the swine industry.
Keywords:
Streptococcus suis; bacteria; bacterial capsule; mutation; occupational health; pigs; porcine endocarditis; swine; zoonoses; zoonosis.
MeSH terms
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Animals
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Bacterial Capsules / genetics*
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Bacterial Capsules / physiology
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Endocarditis, Bacterial / microbiology
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Endocarditis, Bacterial / veterinary
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Genes, Bacterial
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Mice
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Mice, Inbred C57BL
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Multigene Family
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Mutation
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Polysaccharides, Bacterial / genetics
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Serial Passage
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Serotyping
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Streptococcal Infections / microbiology
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Streptococcal Infections / veterinary
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Streptococcus suis / classification
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Streptococcus suis / genetics
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Streptococcus suis / isolation & purification
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Streptococcus suis / pathogenicity*
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Swine
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Swine Diseases / microbiology
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Virulence / genetics
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Virulence Factors / genetics*
Substances
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Polysaccharides, Bacterial
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Virulence Factors