Miscellaneous bacteria

Question 1

mycoplasma pneumoniae

Answer 1

No cell wall, sterols from host
Airborne, humans only, Macrolides or quinolones
D: tracheobronchitis and pharyngitis, walking (atypical) pneumonia, other species too.

Question 2

Rickettsia spp +A57:D61

Answer 2

Small G- like bacilli
obligate intracellular parasites (endothelium) Hard-ticks, Weil-Felix agglutination
D: Rocky Mountain Spotted Fever: fever, HA, malaise, myalgias, nausea, macular rash spreading from hands/feet to trunk. Also Typhus

Question 3

Ehrlichia and anaplasma

Answer 3

Small G- like
obligate intracellular parasites (vacuoles of hemapoetic cells) zoonotic and ticks
D: Many Sx’s: E. chaffeenis = monocyte ehrlichiosis. A. phagocytophilum = granulocytic ehrilchiosis

Question 4

coxiella burnetii

Answer 4

small G-, spores
obligate intracellular growth. Zoonotic, inhaled or unpasteurized milk, extreme stable
D: Mostly aSx. Acute= pneumonia, hepatitis, fever. Chronic= endocarditis. Biothreat due to low infectious dose (1-10 cells)

Question 5

chlamydia trachomatis

Answer 5

Small, G-, bacilli, NO PEPTIDOGLYCAN
obligate intracellular parasites. Inactive= infectious elementary. Active= non-infect ret
D: Urethritis, PID, most common STD in U.S. Trachoma= infectious blindness. Lymphogranuloma venereum

Question 6

Chlamydophila spp.

Answer 6

Small, G-, bacilli, NO PEPTIDOGLYCAN
obligate intracellular parasites. Inactive= infectious elementary. Active= non-infect ret
D: C. pneumoniae can lead to atherosclerosis. C. psittaci= Psittacosis or parrot fever can spread to RES of liver and spleen