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Flashcards in 5. Neisseria Deck (15)
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1
Q

Neisseria xterisitics

A

Gram - diplococci, oxidase and catalase +, Thayer Martin or chocolate agar, needs CO2, fragile

2
Q

Neisseria virulence factors

A

Cell surface: pili, LOS porin proteins

3
Q

N. meningitidis xteristics

A

Glucose + maltose. Serotypes. Capsule.

4
Q

N. gonorrhea xteristics

A

Glucose. No capsule. Strains. Opa protein (attachment, dual variation). Facultative intracellular.

5
Q

N. gonorrhea virulence factors

A

Pili, LOS, opa protein, porins, IgA protease, B lactamase

6
Q

At risk population for disseminated N. gonorrhea

A

People with late complement deficiency

7
Q

N. gonorrhea infection

A

In genital tract, rectum, conjunctivitis, pharyngitis

8
Q

N. gonorrhea symptoms

A

Men: urethritis, dysuria, pus
Women: asympotomatic OR cervicitis, dysuria, ↑ discharge. Can lead to salpigitis, PID, infertility

9
Q

Disseminated N. gonorrhea symptoms

A

Fever, migratory arthralgias, purulent arthritis, pustular rash on extremities

10
Q

N. gonorrhea treatment and prevention

A

Ceftriaxone + azithromycin (chlamidya co-infection tx). No vaccine.

11
Q

N. meningitidis transmission

A

Respiratory droplets and close contacts. Late complement deficiency. Dry and cold months. Affects mostly kids. #2 cause CAMeningitis in adults.

12
Q

N. meningitidis virulence factors

A

Polysaccharide capsule LOS!!!, IgA protease. MO can cross BBB.

13
Q

N. meningitidis clinical syndromes

A

meningitis, meningitis with meningococcemia (blood infection), or
meningococcemia without clinical evidence of meningitis.

14
Q

Meningitis symptoms

A

Sudden onset fever, headache, stiff neck, photophobia, myalgias, N/V

15
Q

Meningitis treatment and prevention

A

Penicillin or ceftriaxone. Abx prophylaxis: rifampicin, cipro, ceftriaxone. Vaccine: polysacc capsule vaccine, polyvalent vax (A,C,Y,W), Serogroup B vaccines.