Gr - Small Nonenteric Bacilli Flashcards
Haemophilus requires
X factor -> Hemin
V Factor -> NAD/ NADP
On which agar can haemophilus grow?
Chocolate agar
Blood agar only in presence of S. aureus
Which type of H. Influenza is the most dangerous one?
Type b
Classification of h. Influenza
Tyeable -> enter blood stream, Meningitidis, Septic arthritis, Cellulitis
Non-typeable -> normal inhabitants of URT, contigous spread
H. Ducreyi causes
STI
Stages of B. Pertussis
Catarrhal
Paroxysmal
Convalescent
How does B. Pertussis cause an infection?
It binds to ciliated epithelium in URT and produces toxin (Pertussis toxin)
Brucella causes which infections?
- malta fever
- maltese fever
- mediterranean fever
- rock fever
- undulant fever
- bangs disease
Transmission of Brucella to humans
(Zoonosis disease)
Contact with infected animal -> B. Suis
Ingestion (raw milk, unpasteurized) -> B. Melitensis
Inhalation
Diagnosis methods for Brucella
WRIGHT Test
Rose Bengal test
Legionella morphology
Thin, plemorphic, gram negative rods
Where are legionella found in nature and in infected host?
In nature: in free living amoeba
In infected host: in alveolar macrophages, monocytes, alveolar epithelial cells
Legionella pneumophilia pathogenesis
- bacterial outer membrane protein CR 3 complement receptor on macrophage
Type IV secretion system
Intracellular multiplication
2 forms of disease in legionella pneumophilia
Pontiac fever & Legionnaires disease
Cultivation of legionella pneumophilia on which medium?
Buffered charcoal yeast extract medium
Buffered charcoal yeast extract medium
