BACTERII DE IMPORTANTA MEDICALA INTRODUCERE Exemple de bacterii patogene emergente si reemergente din 1977 Bacteria Legionella pneumophila Listeria monocytogenes Campylobacter jejuni Staphylococcus aureus E. coli O157:H7 Borrelia burgdorferi Helicobacter pylori Ehrlichia chaffeensis Clostridium difficile Vibrio cholerae O139 Salmonella enterica Typhimurium DT 104 Bartonella henselae Streptococcus pyogenes Chlamydia pneumoniae Clostridium botulinum Vibrio vulnificus Parachlamydia Corynebacterium amycolatum Boala produsa pneumonia legionarilor listerioza gastroenterita sindromul de soc toxic colita hemoragica; sindrom hemolitic uremic boala Lyme si complicatii ulcere gastrice si duodenale ehrlichioza umana colita pseudomembranoasa, diareea post-antibiotic jolera epidemica Serotype salmoneloza boala zgirieturii de pisica fasciita necrozanta (GAS); sindromul de soc toxic streptococic ateroscleroza sindrom de moarte infantila subita (SIDS) infectii ale ranilor, septicemie, gastrointestinale pneumonie endocardite intraspitalicesti

afectiuni

Grupe de bacterii de importanta medicala Spirochete Bacterii Gram-negative Bacterii Gram-pozitive Micoplasme Chlamidii i ricketssii

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Micobacterii Cocii piogeni- genereaza infectii supurative Gram-pozitivi -1/3 din infectiile bacteriene umane (amigdalite, pneumonii, toxiinfectii alimentare, afectiuni cutanate, socuri toxice severe) o Staphylococcus aureus, Streptococcus pyogenes si Streptococcus pneumoniae Gram-negativi o Neisseria gonorrhoeae si N. meningitidis. Staphylococcus o Staphylococcus epidermidis (microbiota pielii si mucoaselor) o Staphylococcus aureus (mucoasa nazala, tract gasrtrointestinal, piele) Patologie diversa (arsuri, infectii ale plagilor, penumonie, osteomielita, septicemie, intoxicatii alimentare, sindrom de soc toxic) Agent nosocomial Multirezistenta la antibiotice (peniciline)

Streptococcus pyogenes (streptococi heta-hemolitici de grup A) o infectii supurative si toxinoze, boli autoimune, afectiuni alergice o microbiota normala a tractului respirator superior (