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36 Cards in this Set

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• coccobacilli


• obligate aerobe


• NM (except B. bronchiseptica)


• oxidase (+) (except B. parapertussis)


• urease (+) (except B. pertussis)

What are the general characteristics of Bordetella species?

Bordetella species

Culture appear as smooth, glistening, silver in color becoming whitish gray with age.

SSW

Growth factors:


• Nicotinic acid


• Cysteine


• Methionine

Growth factors of Bordetella species

NCM

Virulence factors:


• Pertussis toxin


• Adenylate toxin


• Cyclase


• Tracheal cytotoxin


• Dermonecrotic toxin


• Pertactin


• Fimbriae

Virulence factors of Bordetella species

PACTDPF

Bordetella pertussis

Bordet Gengou Bacillus

• obligate aerobe


• gram (-) minute coccobacilli


• NM except B. bronchiseptica


• NS


• hemolytic organisms

What are the morphological characteristics of Bordetella pertussis?

Stuart's medium


• Mishullow's charcoal agar

Transport media for Bordetella pertussis?

SM

Bordet Gengou media

Contains Potato Blood Glycerol

Cultivation for Bordetella pertussis

Jones Kendrick Charcoal Agar

Contains charcoal and yeast extract

Cultivation for Bordetella pertussis

Regan-Lowe Medium

Contains charcoal and horse blood

Cultivation for Bordetella pertussis

Charcoal Cephalexin Blood Agar

Preferred because it contains horse blood, charcoal, cephalexin and amphotericin

Cultivation for Bordetella pertussis

Casamino broth/ Stainer and Scholte

Incubated at 35C without elevated CO2 for 12days for Bordetella pertussis

Whooping cough

Highly contagious, acute infection of URT for children

Airborne transmission

• Catarrhal stage


• Paroxysmal stage


• Convalescent stage

3 stages of the disease

CPC

Catarrhal stage

Runny nose; mucuos membrane inflammation

Paroxymal stage

Continuous coughing that ends in respiratory whoop; severe and violent coughing associated with vomiting and whooping; may last for 6 weeks

Convalescent stage

Can last for as long as 6 months after infection

Bordetella pertussis

Requires 7-14 days of incubation

• Pertussis toxin


• Hemagglutinins (F-HA and PT-HA)


• Adenylate cyclase


• Heat labile toxin


• LPS, heat stable toxin


• Tracheal cytotoxin

Pathogenecity:


Toxins and Enzymes of Bordetella pertussis

PHAHLT

Nasopharyngeal aspirates and swabs

Ideal specimen for laboratory diagnosis of Bordetella pertussis

Stained smears


Culture


• FAT


• Slide Agglutination Test

Laboratory diagnosis for Bordetella pertussis

SCFS

Bordetella parapertussis

• NM


• urease and oxidase (+)


• nitrate (-)


• citrate (+)

Bordetella parapertussis

Large colonies with brown pigment on Bordet Gengou agar

Bordetella parapertussis

Causes milder form of pertussis-like symptoms

Bordetella bronchiseptica

• Motile


• urease and oxidase (-)


• nitrate and citrate (+)


• causes septicemia


• inhabits respiratory tract of canines

Bordetella bronchiseptica

Kennel's cough

Urease:



(-) Bordetella pertussis


(+) Bordetella paraper


(+) Bordetella bronchi

Identify the Urease test for:


? Bordetella pertussis


? Bordetella paraper


? Bordetella bronchi

Motility:


(-) Bordetella pertussis


(-) Bordetella paraper


(+) Bordetella bronchi

Identify the Motility test for:


? Bordetella pertussis


? Bordetella paraper


? Bordetella bronchi

NO3:


(-) Bordetella pertussis


(-) Bordetella paraper


(+) Bordetella bronchi

Identify the NO3 test for:


? Bordetella pertussis


? Bordetella paraper


? Bordetella bronchi

Oxidase:


(+) Bordetella pertussis


(-) Bordetella paraper


(+) Bordetella bronchi

Identify the Oxidase test for:


? Bordetella pertussis


? Bordetella paraper


? Bordetella bronchi

Franciscella tularensis

Classified as Bacterium tularense

Francisella tularensis

Classified as Brucellan tularense

Franciscella tularensis

Classified as Pasteurella tularensis

Franciscella tularensis

Jellison type A Tularemia

Jellison type A Tularemia

Affects rodent, rabbits, squirrels and chipmunks

• being bitten by an infected tick, deerfly or other insect


• handling infected animal carcasses


• breathing in bacteria, F. tularensis


• Tularemia is not known to be spread from person to person

How does tularemia spread?