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mirobiology health
Question | Answer |
---|---|
Non acid fast, non sporulating, and noncapsulated bacilli | L. pneumophilia |
Non fermentative Oxidase and Catalase Positive | L. pneumophilia |
Cooling towers, air conditioning units, hottubs/spas, plumbing fixtures | L. pneumophilia |
L. pneumophilia | The ability to survive and multiply in freeliving protozoa |
Two Diseases,Legionnaires’Disease-Pontiac fever comes from | L. pneumophilia |
Legionairres’ Disease | mortality rate 30% if not treated Symptoms depend on person- asymptomatic/life threat |
More like influenza, no pneumonia, 0%mortality | Pontiac Fever |
Isolation using special media Urine detect antigen detection | Pontiac Fever |
Pontiac Fever | Survive and multiply in Macrophages(especially bronchoalvealor macrophages |
Cysteine and iron/35C and CO2 Buffered Charcoal Yeast Agar | Pontiac Fever |
Treatment is Erythromycin Clinical response within 48 hrs | Pontiac Fever |
Zoonotic disease with worldwide distribution 6 species | Brucella |
Most isolates grow of Brucella grow on bloodand chocolate agar,small,nonmotile.aerobes | Brucella |
Catalase and Oxidase positive,Non sacchrolyticsurvive intracellularly in the RES system | Brucella |
Normal flora in urinary and gastrointestinaltracts of goats, pigs, cows, and dogs | General char. of Brucella |
brucella | Ingestion of contaminated dairy |
Serology for Brucella | “Gold Standard” Febrile agglutinins |
GramNegative,pleomorphic,coccobacilli,nonmotile,Catalase Positive | Pasteurella |
Most are Oxidase Positive and FermentGlucose,weak acid on TSI slant | Pasteurella |
the mucous membranes of the upper respiratory and gastrointestinal of mammals/birds | Pasteurella |
Most common species isolated from humans | Pasteurella multocida |
Pasteurella multocida | Grows on SBA and CHOC– Not on MAC |
Oxidase and Catalase- Positive Indole Positive | Pasteurella multocida |
Oral cavity of cats and dogs,Causative agents of several,Cattle, sheep, goats, poultry etc | Pasteurella multocida |
Pasteurella multocida | Grey/Green, convex, nonhemolytic– “Mushroom” Odor |
Urogenital flora,can cause Endocarditis, Bacteremia, Mixed flora wound infections | Hacek Organism |
Hacek Organism | Most are slow growing 48-72 hrs, requires CO2 to grow |
Leading cause of endocarditis within the Haemophilus sp. | Hemophilus aphrophilus |
Catalase and Oxidase negative,Acid produced from glucose/lactose fermentation | Hemophilus aphrophilus |
Endocarditis, Bacteremia, Wound infections, and Dental infections | Actinobacillus actinomycetemcomitans |
Actinobacillus actinomycetemcomitans | Grows poorly on Blood and Chocolate- Catalase Positive and Oxidase negative |
Normal flora of nose, mouth, and throat, may be present in the gastrointestinal tract | Cardiobacterium hominis |
Pleomorphic, fastidious, gram negative bacillus Associated with endocarditis | Cardiobacterium hominis |
Oxidase and Indole Positive Catalase and Nitrate Negative | Cardiobacterium hominis |
Normal flora of oral and bowel cavities in the body | Eikenella corrodens |
Fastidious gram negative coccobacilli has a strong bleach-like odor | Eikenella corrodens |
Oxidase positive and Nitrate positive Nonmotile | Eikenella corrodens |
Normal flora of human upper respiratory tract and genitourinary tract | Kingella spp |
Kingella spp | Plump Gram Negative Rods |
Kingella spp | Oxidase Positive and Catalase Negative ±Ferment Glucose |
Transmission: handling animals or animalcarcasses,Highly contagious and invasive | Francisella tularensis |
Cystine and Iron,Buffered Charcoal Yeast Extract Agar,choc.agar | Francisella tularensis |
Francisella tularensis | Faint staining, Gram negative coccobacilliSmall, greenish, drop like colonies |
Haemophilus sp | Most members are non pathogenic oropportunistic pathogens |
normal flora of the upper respiratory tractSusceptible to temperature change | Haemophilus sp |
Tiny Gram Negative Coccobacilli,Non-MotileFacultative Anaerobes | Haemophilus sp |
derived from Greek for “Bloodlover” | Haemophilus |
X factor- what is it made of– V Factor- what is it made of | X---hemin, hematinV---nicotinamide-adenine dinucleotide |
Major clinical pathogen,Normal flora of the upper respiratory tract | Haemophilus influenzae |
Vaccine- single biggest impact on pediatricsin the last 20 years | Haemophilus influenzae |
Polysaccharide capsule (7 serogroupsexist)What type most common | Capsule Type B is the most clinicallysignificant/virulent |
Non-encapsulated strains | Adherance: ability to adhere to mucosalsurfaces |
Non-encapsulated StrainsClinical Disease | Causes localized infections |
Requires 3-5% CO2Satellites around S. aureus on SBA | Non-encapsulated Strains |
Haemophilus aegyptius | Conjucivitis “Pink Eye”Brazilian Purpuric Fever |
Requires X/V GrowsinChoc,chemical Differentiation require | Haemophilus aegyptius |
4 hour identification of over 30 taxaincluding Neisseria, Moraxella,Haemophilus, | Remel Rapid NH ID |
Not normal flora STDGenital tract pathogen, | Haemophilus ducreyi |
4-14 days after incubation from the time ofinfection,Painful lesion, no edema | Haemophilus ducreyi |
Localized endemic outbreaks occur in isolatedSTD and prostitution populations | Chancroid is rare in the United States |
Does not need V factor– Fastidious will not satellite on BAP | Chancroid |
Gram negative coccobacillus- “Schoolof Fish” pattern | Chancroid |