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Pathogenicity of Bacteria

Pathogenicity of Bacteria. students.umf.maine.edu. 94,360 cases of MRSA in 2005. slog.thestranger.com. u. 18,650 of which were fatal. Escherichia coli. Campylobacter spp. 76 Million Cases of Food-borne illness every year in the USA. 1.86 billion infected with Mycobacteria tuberculosis.

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Pathogenicity of Bacteria

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  1. Pathogenicityof Bacteria

  2. students.umf.maine.edu 94,360 cases of MRSA in 2005 slog.thestranger.com u 18,650 of which were fatal Escherichia coli Campylobacter spp. 76 Million Cases of Food-borne illness every year in the USA 1.86 billion infected with Mycobacteria tuberculosis 325,000 result in hospitalization 5,000 in death Cholera Year Estimated Deaths: 120,000 # of Cases per Year: 3-5 million www.skyhighway.com Salmonella spp.

  3. 1399 known human pathogens • 541 Bacteria • Discovered at a rate of 3 per year • ~500 Pathogens occur in livestock • 40% are zoonotic • Pathogens in dogs are more than 70% zoonotic

  4. Terms • Pathogenicity • Ability of an organism to cause disease • Virulence Factors • Substances that contribute to pathogenicity • Plasmid • Transferable self-replicating DNA • Transferred by conjugation • Genomic Islands • A part of genome with evidence of horizontal origins • May be on plasmids

  5. Horizontal Gene Transfer From one generation to the next Within a single generation upload.wikimedia.org

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