Question 1

What disease does Chlamydia psittaci cause in humans?

Accepted Answer

A)  Conjunctivitis 
B)  Endocarditis 
C)  Parrot fever 
D)  Bird flu 
A)  Conjunctivitis 
B)  Endocarditis 
C)  Parrot fever 
D)  Bird flu C

Question 2

What organism has been established as a risk factor for Guillain-Barré syndrome?

Accepted Answer

A)  Chlamydia pneumoniae 
B)  C. trachomatis 
C)  C. psittaci 
D)  C. urealyticum 
A)  Chlamydia pneumoniae 
B)  C. trachomatis 
C)  C. psittaci 
D)  C. urealyticum A

Question 3

What has an outer membrane similar to that of many gram-negative bacteria,with the most prominent feature being the major outer membrane protein?

Accepted Answer

A)  Haemophilus 
B)  Reticulate body 
C)  Elementary body (E
B)  
D)  Intracellular parasites 
A)  Haemophilus 
B)  Reticulate body 
C)  Elementary body (E
B)  
D)  Intracellular parasites C

Question 4

What organism's unique life cycle contains an elementary body and a reticulate body?

Accepted Answer

A)  Haemophilus 
B)  Chlamydia 
C)  Ureaplasma 
D)  Mycoplasma 
A)  Haemophilus 
B)  Chlamydia 
C)  Ureaplasma 
D)  Mycoplasma

Question 5

A young man goes to his doctor complaining of a discharge from his penis.The doctor collects a slide for Gram stain and a swab for culture and sends them to the laboratory.The Gram stain is prepared and read: > 25 wbc/hpf,no bacteria seen.The culture results after 48 hours show no growth.What is the most probable diagnosis and the organism responsible?

Accepted Answer

A)  Urethritis, Streptococcus pneumonia 
B)  Epididymitis, Moraxella 
C)  Nongonococcal urethritis, Neisseria meningitidis 
D)  Nongonococcal urethritis, Chlamydia trachomatis 
A)  Urethritis, Streptococcus pneumonia 
B)  Epididymitis, Moraxella 
C)  Nongonococcal urethritis, Neisseria meningitidis 
D)  Nongonococcal urethritis, Chlamydia trachomatis

Question 6

Infants can contract all the following chlamydial infections when passing through the birth canal EXCEPT:

Accepted Answer

A)  Conjunctivitis 
B)  Nasopharyngeal infections 
C)  Pneumonia 
D)  Endocarditis 
A)  Conjunctivitis 
B)  Nasopharyngeal infections 
C)  Pneumonia 
D)  Endocarditis

Question 7

What method is used to confirm a positive Chlamydia trachomatis enzyme immunoassay (EIA)?

Accepted Answer

A)  Cytologic methods 
B)  Direct fluorescent antibody (DF
A)  
C)  Cell culture 
D)  Nucleic acid probes 
A)  Cytologic methods 
B)  Direct fluorescent antibody (DF
A)  
C)  Cell culture 
D)  Nucleic acid probes

Question 8

Why are antibody detection methods for Chlamydia trachomatis infection severely limited in the knowledge they provide the physician?

Accepted Answer

A)  Because C. trachomatis is an intracellular parasite, the body does not produce antibodies against it. 
B)  Only IgE antibodies are produced against C. trachomatis. 
C)  Many people have antibodies from previous infections, and local infections do not cause great increases in antibody levels. 
D)  All of the above. 
A)  Because C. trachomatis is an intracellular parasite, the body does not produce antibodies against it. 
B)  Only IgE antibodies are produced against C. trachomatis. 
C)  Many people have antibodies from previous infections, and local infections do not cause great increases in antibody levels. 
D)  All of the above.

Question 9

What testing method is the method of choice for detecting antibodies to Chlamydia pneumoniae?

Accepted Answer

A)  Direct fluorescent antibody (DF
A)  
B)  Serologic tests 
C)  Cell culture 
D)  Enzyme immunoassay (EI
A)  
A)  Direct fluorescent antibody (DF
A)  
B)  Serologic tests 
C)  Cell culture 
D)  Enzyme immunoassay (EI
A)

Question 10

What is the most commonly used test technique to detect Chlamydia trachomatis infection?

Accepted Answer

A)  Enzyme immunoassay (EI
A)  
B)  Nucleic acid probes 
C)  Cell culture 
D)  Cytologic methods 
A)  Enzyme immunoassay (EI
A)  
B)  Nucleic acid probes 
C)  Cell culture 
D)  Cytologic methods

Question 11

What organism causes the human ehrlichiosis that occurs mostly in Japan and a fish trematode is the vector?

Accepted Answer

A)  Neorickettsia sennetsu 
B)  Ehrlichia chaffeensis 
C)  Anaplasma phagocytophilum 
D)  Leptotrombidium deliensis 
A)  Neorickettsia sennetsu 
B)  Ehrlichia chaffeensis 
C)  Anaplasma phagocytophilum 
D)  Leptotrombidium deliensis

Question 12

Guidelines for reporting the results of Chlamydia trachomatis testing on patients include all the following EXCEPT:

Accepted Answer

A)  Testing specifically using profiles 
B)  Reporting which tests were and were not performed 
C)  Reporting unusual observations 
D)  Performing a routine culture in addition to all the tests for Chlamydia 
A)  Testing specifically using profiles 
B)  Reporting which tests were and were not performed 
C)  Reporting unusual observations 
D)  Performing a routine culture in addition to all the tests for Chlamydia

Question 13

All of the following are urogenital infections in men,produced by Chlamydia trachomatis,EXCEPT:

Accepted Answer

A)  Epididymitis 
B)  Orchitis 
C)  Prostatitis 
D)  Nongonococcal urethritis (NGU) 
A)  Epididymitis 
B)  Orchitis 
C)  Prostatitis 
D)  Nongonococcal urethritis (NGU)

Question 14

Chlamydia trachomatis produces all the following conditions in adult women EXCEPT:

Accepted Answer

A)  Pelvic inflammatory disease (PI
D)  
B)  Salpingitis 
C)  Bacterial vaginosis 
D)  Endometritis 
A)  Pelvic inflammatory disease (PI
D)  
B)  Salpingitis 
C)  Bacterial vaginosis 
D)  Endometritis

Question 15

What organism causes Rocky Mountain spotted fever?

Accepted Answer

A)  Rickettsia prowazekii 
B)  R. typhi 
C)  R. canada 
D)  R. rickettsii 
A)  Rickettsia prowazekii 
B)  R. typhi 
C)  R. canada 
D)  R. rickettsii

Question 16

What organisms are considered obligate intracellular parasites?

Accepted Answer

A)  Chlamydia 
B)  Mycoplasma 
C)  Ureaplasma 
D)  Haemophilus 
A)  Chlamydia 
B)  Mycoplasma 
C)  Ureaplasma 
D)  Haemophilus

Question 17

Chlamydia trachomatis is the infectious agent in all the following conditions in humans EXCEPT:

Accepted Answer

A)  Trachoma 
B)  Urogenital infections 
C)  Lymphogranuloma venereum (LGV) 
D)  Pharyngitis 
A)  Trachoma 
B)  Urogenital infections 
C)  Lymphogranuloma venereum (LGV) 
D)  Pharyngitis

Question 18

What organism causes endemic typhus?

Accepted Answer

A)  Rickettsia typhi 
B)  R. canada 
C)  R. rickettsii 
D)  R. prowazekii 
A)  Rickettsia typhi 
B)  R. canada 
C)  R. rickettsii 
D)  R. prowazekii

Question 19

What disease,caused by Chlamydia trachomatis,is considered a sexually transmitted disease where the organisms enter the lymph nodes near the genital tract,resulting in bubo formation and ultimately rupturing the lymph node?

Accepted Answer

A)  Lymphogranuloma venereum (LGV) 
B)  Trachoma 
C)  Pelvic inflammatory disease (PI
D)  
D)  Conjunctivitis 
A)  Lymphogranuloma venereum (LGV) 
B)  Trachoma 
C)  Pelvic inflammatory disease (PI
D)  
D)  Conjunctivitis

Question 20

How is infection by Chlamydia psittaci determined in humans?

Accepted Answer

A)  Direct fluorescent antibody (DF
A)  
B)  Cell culture 
C)  Enzyme immunoassay (EI
A)  
D)  Serologic methods 
A)  Direct fluorescent antibody (DF
A)  
B)  Cell culture 
C)  Enzyme immunoassay (EI
A)  
D)  Serologic methods

Exam 24: Chlamydia and Rickettsia

What disease does Chlamydia psittaci cause in humans?

What organism has been established as a risk factor for Guillain-Barré syndrome?

What has an outer membrane similar to that of many gram-negative bacteria,with the most prominent feature being the major outer membrane protein?

What organism's unique life cycle contains an elementary body and a reticulate body?

Infants can contract all the following chlamydial infections when passing through the birth canal EXCEPT:

What method is used to confirm a positive Chlamydia trachomatis enzyme immunoassay (EIA)?

Why are antibody detection methods for Chlamydia trachomatis infection severely limited in the knowledge they provide the physician?

What testing method is the method of choice for detecting antibodies to Chlamydia pneumoniae?

What is the most commonly used test technique to detect Chlamydia trachomatis infection?

What organism causes the human ehrlichiosis that occurs mostly in Japan and a fish trematode is the vector?

Guidelines for reporting the results of Chlamydia trachomatis testing on patients include all the following EXCEPT:

All of the following are urogenital infections in men,produced by Chlamydia trachomatis,EXCEPT:

Chlamydia trachomatis produces all the following conditions in adult women EXCEPT:

What organism causes Rocky Mountain spotted fever?

What organisms are considered obligate intracellular parasites?

Chlamydia trachomatis is the infectious agent in all the following conditions in humans EXCEPT:

What organism causes endemic typhus?

What disease,caused by Chlamydia trachomatis,is considered a sexually transmitted disease where the organisms enter the lymph nodes near the genital tract,resulting in bubo formation and ultimately rupturing the lymph node?

How is infection by Chlamydia psittaci determined in humans?

Bacterial Cell Structure, physiology, Metabolism, and Genetics

Host-Parasite Interaction

Laboratory Role in Infection Control

Control of Microorganisms

Performance Improvement in the Microbiology Laboratory

Specimen Collection and Processing

Microscopic Examination of Infected Materials

Use of Colonial Morphology for the Presumptive Identification of Microorganisms

Biochemical Identification of Gram-Negative Bacteria

Immunodiagnosis of Infectious Diseases

Applications of Molecular Diagnostics

Antibiotic Mechanisms of Action and Resistance

Antimicrobial Susceptibility Testing

Staphylococci

Streptococcus, enterococcus, and Other Catalase-Negative Gram-Positive Cocci

Aerobic Gram-Positive Bacilli

Neisseria Species and Moraxella Catarrhalis

Haemophilus and Other Fastidious Gram-Negative Bacilli

Enterobacteriaceae

Vibrio,aeromonas,plesiomonas and Campylobacter Species

Nonfermenting and Miscellaneous Gram-Negative Bacilli

Anaerobes of Clinical Importance

Spirochetes

Mycoplasma and Ureaplasma

Mycobacterium Tuberculosis and Other Nontuberculosis Mycobacteria

Medically Significant Fungi

Diagnostic Parasitology

Clinical Virology

Agents of Bioterror

Biofilms: Architects of Disease

Upper and Lower Respiratory Tract Infections

Skin and Soft Tissue Infections

Gastrointestinal Infections and Food Poisoning

Infections of the Central Nervous System

Bacteremia and Sepsis

Urinary Tract Infections

Genital Infections and Sexually Transmitted Diseases

Infections in Special Populations

Zoonotic Diseases

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