81. Genera Coxiella and Bartonella

Question 1

Coxiella Genus?

Answer 1

COXIELLA genus
Derrick – 1937 slaughterhouse workers in Australia
Burnet – 1937 Australia
Cox – 1938 USA
C. burnetii
Culture
• embryonated eggs
Resistance
• very good (in dust 50 days!!!)
Pathogenicity
• no vectors are needed (ticks)
• Q-fever (human, cattle, sheep, goat), worldwid

Question 2

Bartonella Genus?

Answer 2

BARTONELLA genus
Alberto Barton (1870-1950)
Peruvian microbiologist
Species
• B. henselae cat scratch disease
Staining, Morphology, Culture
Gr-negative, slightly curved rods, blood agar, 3-4 weeks
Patogenicity
• Cat scratch disease: incubation time: 1-3 weeks, ulcer, fever,
headache, enlarged lymph nodes