Haemophilus and Bordetella Flashcards Preview

Microbiology Module 1 '15 - '16 > Haemophilus and Bordetella > Flashcards

Flashcards in Haemophilus and Bordetella Deck (39):
1

What are the gram characteristics of Haemophilus?

Tiny GNR (can look coccobacillary), can be long filamentous rods

2

What are the characteristics of Haemophilus?

Very fastidious, Capnophiliic, mousy smell, oxidase AND catalase positive most are opportunistic and adapted the respiratory tract. Require growth factors (i.e. X, V or Both)

3

What is X factor, where is it found?

Hemin. It is found in chocolate and is HEAT STABLE

4

What is V factor, where is it found?

NAD, in RBS but inhibited by enzymes in humans. Also present in yeast extract (chocolate agar)

5

What species require V factor?

All BUT Aggregaatibacter aphrophilus and Haemphilus ducreyi

6

What are the two methods for identifying X and V factor?

Staph streak or disks

7

What factors are in T-Soy plates?

None

8

What factors are in SBA

Only X

9

What factors are released by stapylcoccus aureus?

V

10

What factors are in chocolate agar?

X and V

11

What factors are in Rabbit blood Agar?

X and V

12

What factors are in Fildes Enrichment agar?

X and V

13

What characteristic does a rabbit blood plate help to identify? What part of the bacteria name indicates this?

BETA hemolysis, haemolyticus

14

What is an alternative form of determining X factor? What does it eliminate? What is its basis?

Porphyrin, Eliminates Hemin carryover and it fluroeses

15

What is the clinical significance of H. flu?

It is a secondary invader with Pneumonia and in noninvasive NTHi (nontypable)

16

What is the Primary virulence factor with H. flu?

The Capsule

17

What strain does the H. flu vaccine fight against?

Type B, so obviously if you get an infection and have had the vaccine, it is prob. not type B

18

What are the plate characteristics of H. influenzae?

Smooth colonies on choclate, requires both X and V and is non-hemolytic

19

What does para mean when it is with the bacteria name?

It requires only V factor

20

What are 3 bacteria that can provide V factor?

S. aureus, S. pneumoniae and Neisseria

21

If an organism grow on chocolate, what can you say about its factors?

It MAY require X and V

22

If an organism satellites around S. Aureus on SBA, what can you say about its factors?

It requires V and MAY require X

23

If an organism saellites around S. Aureus on T-soy, What can you say about its factors?

It requires only V

24

What ca you say about an organism that grows on SBA concerning its factors?

Does not require V

25

What causes pink eye?

Haemophilus aegyptius

26

What is another name for Haemphilus aegyptius?

Koch-Weeks bacillus

27

What are the characteristics and location of Hemphilus bigroup aegyptius?

Agent of Brazilian purpuric fever. System disease with a high mortality rate

28

Which bacteria is not normal flora?

Haemophilus ducreyi

29

What gram stain of a lesion has a school of read fish or rail road track on.

Haemophilus decreyi

30

What is the common cause of Gardnerella vainalis?

Bacterial vaginosis

31

What gram stain has epithelial cells with Gram variable cells? (Clue cells)

Bacterial vaginosis

32

What disk is G. vaginalis susceptible to?

SPS

33

What is the agent of whooping cough?

Bordetella pertusiss

34

What are the three stages of pertussis and what happens in each?

1. Catarrhal (symptoms of cold). 2. Paroxysmal (characteristic cough) 3. Convalescent

35

What are lab identifications of Pertussis?

Culture AND PCR, Nasopharyngeal culture and cough plates

36

What bacteria has a mercury droplet on Bordet-Gengou, Charcoal Cephalexin Blood, Regan-Lowe and is incubated for 7 days?

B. Pertusiss

37

What is the vaccine against pertussis in infants and adults?

dTap in infants and TdaP in adults

38

What bacteria causes a milder disease of pertussis?

Bordetella parapertussis

39

What bacteria is associated with dogs?

Bordetella Bronchiseptica