Rickettsia & Chlamydia

Question 1

Fever and rash always in

Answer 1

Rickettsia

Question 2

What are the main points to know about rickettsia?

Answer 2

• mostly arthopodborne
• Gram - , don’t stain well
  Obligate intracellular parasites
• Tetracycline/Doxycycline
  -OX-10
  -OX-9 in weil-felix reaction

Question 3

Rocky mountain spotted fever

Answer 3

caused by Rickettsia Ricketts or R Ricketsii transmitted by ticks from dogs or mice.
- can kill, if don’t take parasite out in 10 days*

Question 4

Epidemic Typhus

Answer 4

caused by rickettsia prowazekii

• BODY LOUSE
• head/body lice
• need good hygiene
• may also cause brill- Zinsser disease

Question 5

Endemic Typhus

Answer 5

R. Typhi

• S.W Mexican typhus tarbadillo
• Rat flee , contaminate clothes/airborne

Question 6

Scrub Typhus

Answer 6

R. Tsutsugamushi transmitted by mice

- French L’etache noir same like Eschar (black spot at site of bite)

Question 7

Trench fever

Answer 7

Bartonella Quintana

• head/body louse ( can survive in human blood and lice feces)
• SHARK SHIN fever
• no Weil-felix reaction

Question 8

Rickettsial pox

Answer 8

• R. Akari
• mouse bites L’Etache noir
• resembles chicken pox
• No weil felix reaction

Question 9

Tickborne fever*

Answer 9

R. Conori

• L’etache noir
• ticks brown dog
• milder version of RMSF fever & rash

Question 10

R prowazekii for epidemic typhus also brings out

Answer 10

Brill-Zinsser disease

- can remain latent

Question 11

Ehrlichiosis

Answer 11

bacteria that attacks WBC and inhibits phagocytosis
Human Monocytic ehrlichiosis (lone star tick)
Human granulocytic ehrlichiosis (dog/deer tick).. affect neutrophils

Question 12

Q fever is known as

Answer 12

Coxiella Burnetti
Carroll Burnett likes milk
- most heat resistant pathogen known to man. temp of pasteurization is based on this bacterium.
- in livestock transmitted droplets cattle, sheep, goat
-donut shaped granuloma

Question 13

Chlamydia

Answer 13

obligate intracellular parasite

• subgroup of rickettsia
• TRIC agent Trachoma inclusion conjunctivitis
• Gonorrhea like disease cause by sexual contact
• stains poorly and cannot grow on living tissue of labs
• BACTERIAL INFECTIOUS DISEASE
• ANTIBIOTICS

Question 14

chlamydia trachomatis

Answer 14

More common in males

• fever, malaise, swelling, tenderness
• male symp- urethritis, epididymitis, urethral discharge, hemospermia, proctitis (rectum)
• female symp cervicitis, endometritis, salpingitis, proctitis, PID

Question 15

NGU means

Answer 15

non gonococcal urethritis
- gram - diplococuss
burny discharge like gonorrhea

Question 16

chlamydia psitacci

Answer 16

causes psittacosis ornithosis; airborne bacterial disease of the lung

• affects birds
• humans get it from inhaling bird droppings, res droplets from humans
• symptoms like influenza or atypical pneumonia

Question 17

chlamydia pneumonia

Answer 17

res air droplets, newborns common exposure from vaginal wall of mother during birth
- fever, cough, infection of lower left lobe.