Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
|
common characteristics
-gram -pathogenic species are -oxidase -capsule found in |
Gram negative diplococci
2. Pathogenic species are often/always intracellular 3.Oxidase positive 4. Pathogenic species more fastidious: -Capsule: meningococci only: prevents phagocytosis -saliva |
|
|
Neisseria gonorrhoeae
-which ones have pili |
Tl and T2 subtypes have the pili that increase their ability to attach to cells and cause infection
|
|
|
B. Clinical syndromes
-Perihepatitis: differentiates gonnhereia from staph |
1.Urethritis
2.Cervicitis 3 Proctitis 4 Pharyngitis 5. Dermatitis/arthritis/tenosynovitis (passive and active motion hurt) (disseminated infection; lesions) 6. Ophthalmitis in newborns 7. Fitz-Hugh-Curtis Syndrome: migration of infection via fallopian tube in women to liver -joint pain |
|
|
transmission;
-Women and men may be -Women may have initial asymptomatic infection, then have it flair and disseminate |
Except in newborns this is a sexually transmitted disease
2. Humans are the only host (need contact) 3. asymptomatic and can transmit the infection 4. during menses |
|
|
Neisseria meningitidis
.3 main Clinical syndromes -Chronic meningococcemia: |
1.Meningococcemia: organism in upper respiratory tract, spreads to blood stream, may cause only mild symptoms or fever, may also be associated with meningitis, petechial rash, overwhelming infection including peripheral vasospasm and loss of digits
2.Meningitis: One of the major bacterial pathogens in all except newborns 3.Waterhouse-Frederichsen Syndrome: overwhelming, rapidly progressive meningococcemia with shock, purpura fulminans, multiple organ failure, adrenal necrosis, and death 4. recurrently or persistently positive blood cultures with minimal symptoms |
|
|
. Lives as nomal flora in the
-Colonization rates increase |
-upper respiratory tract of 5-15% of young adults
3. in closed populations |
|
|
. infection usually occurs
-Infections occur both -groups _____ cause the most and most severe disease -Recurrent or severe disease in an individual is often associated with .... especially_________ |
-soon after colonization if it happens at all
5. sporadically and in epidemics 6. Groups B, C, and Y 7. complement deficiencies, especially of C6, C7, or C8 |
|
|
D. Prevention
|
1. A polysaccharide vaccine against types A, C, Y, and W135 exists; there is no B vaccine
2. Prophylaxis for CLOSE contacts of cases is usually given: rifampin is the most common agent used. |
