Term
| What is common to all species of Haemophilus? |
|
Definition
|
|
Term
| What are X and V growth factors? |
|
Definition
|
|
Term
| Three ways to test for X and V factors? |
|
Definition
| Filter paper on nutrient agar, phorphyrin test and satellite with S. aureus |
|
|
Term
| What does a positive phoryphrin test mean? |
|
Definition
| Needs V factor, rules of H. influenzae because that needs X and V |
|
|
Term
| Three ways to speciate Haemophilis? |
|
Definition
| X and V factors, fermentation testing or biotyping |
|
|
Term
| Defining characteristics of H. influenzae? |
|
Definition
| Needs both X and V factor and will ferment glucose only |
|
|
Term
| What diseaes does H.influenzae cause in children? |
|
Definition
| Meningitis and epiglottitis |
|
|
Term
| What other diseases does H.influenzae cause? |
|
Definition
| otitis media, pneumonia, and conjunctivitis (self-limiting) |
|
|
Term
| How are H.influenzae diseases transmitted? |
|
Definition
|
|
Term
| What are the two virulence factors of H.infleunzae? |
|
Definition
| Biotypes(1-4) and serotypes (a-f) |
|
|
Term
| Which serotype is associated with meningitis? |
|
Definition
|
|
Term
| On which plate with H. influenzae grow? |
|
Definition
|
|
Term
| Two direct detection methods of H. influenzae? |
|
Definition
| Gram stain (diplococci) and antigen detection |
|
|
Term
| How do you treat H.influenzae? |
|
Definition
| ceftriaxone or cefotaxime |
|
|
Term
| How is H.influenzae prevented? |
|
Definition
| Vaccine, HiB for serotype B |
|
|
Term
| Defining characteristics of H.ducreyi |
|
Definition
| Not normal flora, needs X factor only and does not ferment any sugar |
|
|
Term
| What disease does H.ducreyi cause? |
|
Definition
|
|
Term
| What is unique about H.ducreyi gram stain |
|
Definition
| coccobacilli look like a school of fish |
|
|
Term
| How can H.ducreyi be identified? |
|
Definition
| X and V testing, fermenting, phorphyrin, and PCR |
|
|
Term
| How does H.ducreyi grow on chocolate? |
|
Definition
| under conditions with increased humidity |
|
|
Term
| What diseases do other Haemophilus cause? |
|
Definition
|
|
Term
| Defining factors of H.parainfluenzae |
|
Definition
| needs V factor only, ferments glucose and sucrose |
|
|
Term
| Defining factors of H.apphrophilus? |
|
Definition
| does not need V or X factor, ferments glucose, sucrose and lactose |
|
|
Term
| Will Haemophilis grow on MacConkey? |
|
Definition
|
|
Term
| Haemophilus + phorphyrin test? |
|
Definition
| negative, no fluorescense |
|
|
Term
| Other organisms that cause meningitis? |
|
Definition
| Strep pneumonia, N.meningitis. and l. monocytogenes |
|
|
Term
| What doe HACEK stand for? |
|
Definition
| Haemophilis, Actinobacillus, Cardiobacterium, Eikenella, and Kingella |
|
|
Term
| What is the most common serotype of H. influenzae? |
|
Definition
|
|
Term
| A positive beta lactamase tests means? |
|
Definition
| Don't use penicillin because it is a beta lactam drug |
|
|
