MISCELLANEOUS BACTERIA (Zoonotic infection) Flashcards
Know the bacteria, know the disease
Bacteria that causes Cat Scratch Fever:
Barnotella henselae
Bacteria that causes undulant fever (Malta fever) in man and contagious abortion in goats, cows, hogs and dogs
Brucella
Culture medium for Brucella:
Biphasic Castaneda bottles (Up to 3-4 weeks)
Specimen of choice for the diagnosis of Brucella infection:
Bone marrow
A test that confirms the infection and diagnosis (serologic testing for Brucella agglutinins)
Serum agglutination test
Brucella spp that is not detected by serum agglutination test:
B. canis
The only H2S positive (+) Brucella spp.
B. abortus (Cattle)
The only Brucella spp. positive for Thionin, Basic fuchsin, Thionine blue
B. melitensis (Sheep and goats)
Brucell spp. positive for Basic fuchsin, and Thionin blue. negative for Thionin
B. abortus (Cattle)
Brucella species that are positive only in Thionin:
B. suis (Pigs)
B. canis (Dogs)
Bacteria that causes Tularemia (Rabbit fever)
Franciscella tularensis
Special medium for F. tularensis:
Blood-Cysteine- Glucose Agar with Thymine
Tularemia skin test:
Forshay’s test
Most common form of tularemia:
Ulceroglandular tularemia
Tularemia transmission:
- Occurs in animal handlers especially rabbits
- also from tick bites
Bacteria that lives in the mouth of cats and dogs
Pasteurella
Key infections of Pasteurella:
- Cellulitis
- Osteomyelitis
- Bite wounds - usually polymicrobial (S. aureus)
Transmission of diseases from Ehrlichia species:
Via Ticks (Lone star tick)
Infection caused by Ehrlichia chaffeensis
Human MONOCYTE ehrlichiosis
Infection caused by Ehrlichia phagocytophilia and Ehrlichia ewingii
Human GRANULOCYTE eherlichiosis
Infection caused by Eherlichia sennetsu:
Sennetsu fever
Appearance of inclusions in monocytes associated with Ehrlichiosis appears “_________”
“Berry-like/Mulberry-like” inclusions (morulae)
Bacteria that is very similar to Ehrlichia:
Anaplasma
Anaplasma causes:
Anaplasmosis
Where is the morula seen in anaplasmosis:
Granulocytes
Differentiates from Ehrlichiosis in which the morulae is seen in monocytes
Ehrlichia = inclusions in MONOCYTES
Anaplasma = inclusions in GRANULOCYTES
mnemonic = “ME-GA”
Bacteria that causes Rat bite fever (Haverhill fever/ streptobacillary RBF)
Streptobacillus moniliforms
Bacteria that causes SODOKU, a form of rat bite fever.
Spirillum minus
Colony appearance of S. minus:
Puff ball/cotton ball/bread crumbs appearance in the bottom of liquid media (strings of eparls in thio). Fried egg appearance after 5 days of growth
