Host-Microorganism; Bacteria & Other names

Answer: B. Encounter and entry

A. Incorrect — Convalescence is the recovery period.

B. Correct — This is the initial encounter between the pathogen and host, including colonization of a surface.

C. Incorrect — Invasion and dissemination occur after initial colonization.

D. Incorrect — The clinical stage is when characteristic symptoms are most apparent.

E. Incorrect — The stage of decline occurs when symptoms decrease.

Which event occurs when a pathogen first encounters and colonizes a host surface?

A. Convalescence

B. Encounter and entry

C. Invasion and dissemination

D. Clinical stage

E. Stage of decline

Answer: C. Colonization and entry

A. Incorrect — Outcome refers to the final result of infection.

B. Incorrect — Encounter and entry is the initial contact and colonization.

C. Correct — The pathogen multiplies and penetrates the host's surface defenses.

D. Incorrect — Convalescence is a clinical recovery stage.

E. Incorrect — Stage of decline involves decreasing symptoms.

During which host–microorganism interaction does the pathogen multiply and breach the host's surface defenses?

A. Outcome

B. Encounter and entry

C. Colonization and entry

D. Convalescence

E. Stage of decline

Answer: D. Invasion and dissemination

A. Incorrect — This is the initial encounter.

B. Incorrect — This involves multiplication and crossing surface defenses.

C. Incorrect — Outcome is the final result.

D. Correct — Invasion involves entering deeper tissues, while dissemination means spreading through the host.

E. Incorrect — Incubation is a clinical stage without symptoms.

A pathogen penetrates deeper tissues and spreads to other parts of the body. Which interaction stage is occurring?

A. Encounter and entry

B. Colonization and entry

C. Outcome

D. Invasion and dissemination

E. Incubation

Answer: E. Clearance, persistence, or host death

A. Incorrect — Incubation is an early clinical stage.

B. Incorrect — Prodromal is the period of nonspecific symptoms.

C. Incorrect — Clinical stage involves characteristic symptoms.

D. Incorrect — Colonization is an earlier interaction event.

E. Correct — Infection may be cleared, persist, or result in host death.

Which of the following is considered a possible outcome of an infection?

A. Incubation

B. Prodromal stage

C. Clinical stage

D. Colonization

E. Clearance, persistence, or host death

Answer: A. Incubation

A. Correct — Incubation is the interval between infection and the appearance of symptoms.

B. Incorrect — Prodromal involves early, nonspecific symptoms.

C. Incorrect — Clinical stage presents characteristic signs and symptoms.

D. Incorrect — Decline is when symptoms decrease.

E. Incorrect — Convalescence is the recovery period.

A patient is infected but has no signs or symptoms yet. Which stage of infection is this?

A. Incubation

B. Prodromal

C. Clinical

D. Decline

E. Convalescent

Answer: B. Prodromal

A. Incorrect — There are generally no symptoms during incubation.

B. Correct — The prodromal stage is characterized by early, nonspecific symptoms.

C. Incorrect — Characteristic symptoms are prominent during the clinical stage.

D. Incorrect — Symptoms decrease during decline.

E. Incorrect — Convalescence is recovery.

A patient experiences malaise, fatigue, and mild discomfort before developing the characteristic symptoms of an infection. What stage is this?

A. Incubation

B. Prodromal

C. Clinical

D. Decline

E. Convalescent

Answer: C. Clinical

A. Incorrect — Symptoms have not yet appeared.

B. Incorrect — Symptoms are nonspecific.

C. Correct — The clinical stage is when the typical manifestations of the disease are evident.

D. Incorrect — Symptoms are decreasing.

E. Incorrect — The patient is recovering.

During which stage are the characteristic signs and symptoms of a disease most prominent?

A. Incubation

B. Prodromal

C. Clinical

D. Decline

E. Convalescent

Answer: D. Stage of decline

A. Incorrect — Incubation occurs before symptoms.

B. Incorrect — Prodromal involves nonspecific symptoms.

C. Incorrect — Clinical stage is characterized by prominent symptoms.

D. Correct — The stage of decline occurs as symptoms decrease.

E. Incorrect — Convalescence follows the decline and involves recovery.

A patient's fever and other symptoms begin to decrease because the immune system and treatment are controlling the infection. Which stage is occurring?

A. Incubation

B. Prodromal

C. Clinical

D. Stage of decline

E. Convalescent

Answer: E. Convalescent

A. Incorrect — This occurs before symptoms.

B. Incorrect — This involves early nonspecific symptoms.

C. Incorrect — This is the period of characteristic symptoms.

D. Incorrect — This is when symptoms begin to decrease.

E. Correct — Convalescence is the recovery period after the disease's active phase.

A patient is recovering after an acute infection. Which stage describes this period?

A. Incubation

B. Prodromal

C. Clinical

D. Stage of decline

E. Convalescent

Answer: B. Incubation → Prodromal → Clinical → Decline → Convalescent

A. Incorrect — The sequence is out of order.

B. Correct — This is the standard sequence.

C. Incorrect — Incubation occurs before prodromal and clinical stages.

D. Incorrect — Prodromal occurs before the clinical stage.

E. Incorrect — Convalescence is near the end, not the beginning.

Which sequence correctly represents the five clinical stages of infection?

A. Clinical → Incubation → Decline → Prodromal → Convalescent

B. Incubation → Prodromal → Clinical → Decline → Convalescent

C. Prodromal → Clinical → Incubation → Convalescent → Decline

D. Incubation → Clinical → Prodromal → Decline → Convalescent

E. Convalescent → Incubation → Prodromal → Clinical → Decline

Answer: C. Mycobacterium gordonae

A. Incorrect — M. terrae is the Radish bacillus.

B. Incorrect — M. kansasii is the Yellow bacillus.

C. Correct — M. gordonae is known as the Tap water bacillus.

D. Incorrect — M. leprae is Hansen's bacillus.

E. Incorrect — M. tuberculosis is the Tubercle or Koch bacillus.

Which organism is commonly known as the Tap water bacillus?

A. Mycobacterium terrae

B. Mycobacterium kansasii

C. Mycobacterium gordonae

D. Mycobacterium leprae

E. Mycobacterium tuberculosis

Answer: B. M. terrae

A. Incorrect — M. avium-intracellulare is Battey bacillus.

B. Correct — M. terrae is called Radish bacillus.

C. Incorrect — M. gordonae is Tap water bacillus.

D. Incorrect — M. leprae is Hansen's bacillus.

E. Incorrect — M. kansasii is Yellow bacillus.

Which Mycobacterium is known as the Radish bacillus?

A. M. avium-intracellulare

B. M. terrae

C. M. gordonae

D. M. leprae

E. M. kansasii

Answer: D. Mycobacterium avium-intracellulare

A. Incorrect — This is Tubercle or Koch bacillus.

B. Incorrect — This is Hansen's bacillus.

C. Incorrect — This is Tap water bacillus.

D. Correct — M. avium-intracellulare is known as Battey bacillus.

E. Incorrect — This is Radish bacillus.

Battey bacillus refers to which organism?

A. Mycobacterium tuberculosis

B. Mycobacterium leprae

C. Mycobacterium gordonae

D. Mycobacterium avium-intracellulare

E. Mycobacterium terrae

Answer: A. Mycobacterium kansasii

A. Correct — M. kansasii is known as Yellow bacillus.

B. Incorrect — Tap water bacillus.

C. Incorrect — Hansen's bacillus.

D. Incorrect — Radish bacillus.

E. Incorrect — Tubercle or Koch bacillus.

Yellow bacillus is the common name for which organism?

A. Mycobacterium kansasii

B. Mycobacterium gordonae

C. Mycobacterium leprae

D. Mycobacterium terrae

E. Mycobacterium tuberculosis

Answer: E. Mycobacterium leprae

A. Incorrect — M. tuberculosis is Koch bacillus.

B. Incorrect — M. kansasii is Yellow bacillus.

C. Incorrect — M. gordonae is Tap water bacillus.

D. Incorrect — M. avium-intracellulare is Battey bacillus.

E. Correct — M. leprae causes leprosy and is known as Hansen's bacillus.

Hansen's bacillus is associated with which organism?

A. Mycobacterium tuberculosis

B. Mycobacterium kansasii

C. Mycobacterium gordonae

D. Mycobacterium avium-intracellulare

E. Mycobacterium leprae

Answer: B. Mycobacterium tuberculosis

A. Incorrect — Radish bacillus.

B. Correct — M. tuberculosis is also called Tubercle or Koch bacillus.

C. Incorrect — Hansen's bacillus.

D. Incorrect — Yellow bacillus.

E. Incorrect — Tap water bacillus.

Tubercle bacillus or Koch bacillus refers to which organism?

A. Mycobacterium terrae

B. Mycobacterium tuberculosis

C. Mycobacterium leprae

D. Mycobacterium kansasii

E. Mycobacterium gordonae

Answer: C. Corynebacterium diphtheriae

A. Incorrect — C. pseudodiphtheriticum is Hoffman's bacillus.

B. Incorrect — B. anthracis is Anthrax bacillus.

C. Correct — C. diphtheriae is also called Kleb-Loeffler's bacillus.

D. Incorrect — B. subtilis is Hay bacillus.

E. Incorrect — M. tuberculosis is Koch bacillus.

Kleb-Loeffler's bacillus refers to which bacterium?

A. Corynebacterium pseudodiphtheriticum

B. Bacillus anthracis

C. Corynebacterium diphtheriae

D. Bacillus subtilis

E. Mycobacterium tuberculosis

Answer: D. Corynebacterium pseudodiphtheriticum

A. Incorrect — Kleb-Loeffler's bacillus.

B. Incorrect — Hay bacillus.

C. Incorrect — Anthrax bacillus.

D. Correct — C. pseudodiphtheriticum is known as Hoffman's bacillus.

E. Incorrect — Hansen's bacillus.

Hoffman's bacillus is another name for which organism?

A. Corynebacterium diphtheriae

B. Bacillus subtilis

C. Bacillus anthracis

D. Corynebacterium pseudodiphtheriticum

E. Mycobacterium leprae

Answer: A. Bacillus anthracis

A. Correct — B. anthracis is the causative organism of anthrax.

B. Incorrect — B. subtilis is Hay bacillus.

C. Incorrect — Kleb-Loeffler's bacillus.

D. Incorrect — Tack head bacillus.

E. Incorrect — Gas bacillus.

Anthrax bacillus refers to which organism?

A. Bacillus anthracis

B. Bacillus subtilis

C. Corynebacterium diphtheriae

D. Clostridium tetani

E. Clostridium perfringens

Answer: E. Bacillus subtilis

A. Incorrect — Anthrax bacillus.

B. Incorrect — Kleb-Loeffler's bacillus.

C. Incorrect — Tap water bacillus.

D. Incorrect — Not the organism listed in the supplied notes.

E. Correct — B. subtilis is known as Hay bacillus.

Hay bacillus is another name for which organism?

A. Bacillus anthracis

B. Corynebacterium diphtheriae

C. Mycobacterium gordonae

D. Bacillus cereus

E. Bacillus subtilis

Answer: B. Leprosy

A. Incorrect — Tuberculosis is caused by M. tuberculosis.

B. Correct — Hansen's bacillus is M. leprae, which causes leprosy.

C. Incorrect — Diphtheria is caused by C. diphtheriae.

D. Incorrect — Anthrax is caused by B. anthracis.

E. Incorrect — Tetanus is caused by C. tetani.

A laboratory reference lists an organism as Hansen's bacillus. Which disease is most closely associated with it?

A. Tuberculosis

B. Leprosy

C. Diphtheria

D. Anthrax

E. Tetanus

Answer: C. M. kansasii — Yellow bacillus

A. Incorrect — M. gordonae is Tap water bacillus.

B. Incorrect — M. terrae is Radish bacillus.

C. Correct — This is the correct match.

D. Incorrect — M. leprae is Hansen's bacillus.

E. Incorrect — M. tuberculosis is Tubercle or Koch bacillus.

Which pair is correctly matched?

A. M. gordonae — Yellow bacillus

B. M. terrae — Tap water bacillus

C. M. kansasii — Yellow bacillus

D. M. leprae — Koch bacillus

E. M. tuberculosis — Radish bacillus

Answer: D. C. pseudodiphtheriticum — Hansen's bacillus

A. Incorrect — This is correctly matched.

B. Incorrect — This is correctly matched.

C. Incorrect — This is correctly matched.

D. Correct — This is incorrect; C. pseudodiphtheriticum is Hoffman's bacillus. Hansen's bacillus is M. leprae.

E. Incorrect — This is correctly matched.

Which pair is incorrectly matched?

A. B. anthracis — Anthrax bacillus

B. B. subtilis — Hay bacillus

C. C. diphtheriae — Kleb-Loeffler's bacillus

D. C. pseudodiphtheriticum — Hansen's bacillus

E. M. tuberculosis — Koch bacillus

Answer: A. Corynebacterium diphtheriae

A. Correct — Kleb-Loeffler's bacillus is C. diphtheriae.

B. Incorrect — Hoffman's bacillus.

C. Incorrect — Anthrax bacillus.

D. Incorrect — Hansen's bacillus.

E. Incorrect — Koch bacillus.

Which organism is associated with the name Kleb-Loeffler?

A. Corynebacterium diphtheriae

B. Corynebacterium pseudodiphtheriticum

C. Bacillus anthracis

D. Mycobacterium leprae

E. Mycobacterium tuberculosis

Which organism is associated with the name Kleb-Loeffler?

A. Corynebacterium diphtheriae

B. Corynebacterium pseudodiphtheriticum

C. Bacillus anthracis

D. Mycobacterium leprae

E. Mycobacterium tuberculosis

Which group consists entirely of Mycobacterium species and their correct common names?

A. M. leprae — Tap water; M. kansasii — Radish

B. M. terrae — Yellow; M. gordonae — Hansen's

C. M. tuberculosis — Battey; M. avium-intracellulare — Koch

D. M. kansasii — Hansen's; M. leprae — Yellow

E. M. gordonae — Tap water; M. terrae — Radish

Answer: B. Clostridium botulinum

A. Incorrect — C. tetani is Tack head bacillus.

B. Correct — C. botulinum is associated with canned goods and botulism.

C. Incorrect — C. perfringens is Gas bacillus.

D. Incorrect — B. anthracis is Anthrax bacillus.

E. Incorrect — B. subtilis is Hay bacillus.

Canned goods bacillus refers to which organism?

A. Clostridium tetani

B. Clostridium botulinum

C. Clostridium perfringens

D. Bacillus anthracis

E. Bacillus subtilis

Answer: D. Clostridium tetani

A. Incorrect — Canned goods bacillus.

B. Incorrect — Gas bacillus.

C. Incorrect — Bang's bacillus.

D. Correct — C. tetani is known as Tack head bacillus.

E. Incorrect — Pittsburgh pneumonia agent.

Tack head bacillus refers to which organism?

A. Clostridium botulinum

B. Clostridium perfringens

C. Brucella abortus

D. Clostridium tetani

E. Legionella micdadei

Answer: A. Clostridium perfringens

A. Correct — C. perfringens is associated with gas gangrene.

B. Incorrect — Tack head bacillus.

C. Incorrect — Canned goods bacillus.

D. Incorrect — Anthrax bacillus.

E. Incorrect — Bang's bacillus.

Gas bacillus or Gas gangrene bacillus is which organism?

A. Clostridium perfringens

B. Clostridium tetani

C. Clostridium botulinum

D. Bacillus anthracis

E. Brucella abortus

Answer: C. Brucella abortus

A. Incorrect — Wiga pneumonia agent.

B. Incorrect — Eaton agent.

C. Correct — B. abortus is known as Bang's bacillus.

D. Incorrect — Typhoid or Eberth's bacillus.

E. Incorrect — Friedlander's bacillus.

Bang's bacillus refers to which organism?

A. Legionella bozemanii

B. Mycoplasma pneumoniae

C. Brucella abortus

D. Salmonella typhi

E. Klebsiella pneumoniae

Answer: D. Legionella micdadei

A. Incorrect — L. bozemanii is Wiga pneumonia agent.

B. Incorrect — M. pneumoniae is Eaton agent.

C. Incorrect — K. pneumoniae is Friedlander's bacillus.

D. Correct — L. micdadei is associated with Pittsburgh pneumonia.

E. Incorrect — B. abortus is Bang's bacillus.

Pittsburgh pneumonia agent refers to which organism?

A. Legionella bozemanii

B. Mycoplasma pneumoniae

C. Klebsiella pneumoniae

D. Legionella micdadei

E. Brucella abortus

Answer: B. Legionella bozemanii

A. Incorrect — Pittsburgh pneumonia agent.

B. Correct — L. bozemanii is known as Wiga pneumonia agent.

C. Incorrect — Eaton agent.

D. Incorrect — Friedlander's bacillus.

E. Incorrect — Bang's bacillus.

Wiga pneumonia agent refers to which organism?

A. Legionella micdadei

B. Legionella bozemanii

C. Mycoplasma pneumoniae

D. Klebsiella pneumoniae

E. Brucella abortus

Answer: E. Mycoplasma pneumoniae

A. Incorrect — Pittsburgh pneumonia agent.

B. Incorrect — Wiga pneumonia agent.

C. Incorrect — Friedlander's bacillus.

D. Incorrect — Bang's bacillus.

E. Correct — M. pneumoniae is historically known as Eaton agent.

Eaton agent is another name for which organism?

A. Legionella micdadei

B. Legionella bozemanii

C. Klebsiella pneumoniae

D. Brucella abortus

E. Mycoplasma pneumoniae

Answer: A. Klebsiella pneumoniae

A. Correct — K. pneumoniae is known as Friedlander's bacillus.

B. Incorrect — Eaton agent.

C. Incorrect — Gartner's bacillus.

D. Incorrect — Bang's bacillus.

E. Incorrect — Pittsburgh pneumonia agent.

Friedlander's bacillus refers to which bacterium?

A. Klebsiella pneumoniae

B. Mycoplasma pneumoniae

C. Salmonella enteritidis

D. Brucella abortus

E. Legionella micdadei

Answer: C. Salmonella enteritidis

A. Incorrect — S. typhi is Typhoid or Eberth's bacillus.

B. Incorrect — Friedlander's bacillus.

C. Correct — S. enteritidis is Gartner's bacillus.

D. Incorrect — Canned goods bacillus.

E. Incorrect — Bang's bacillus.

Gartner's bacillus refers to which organism?

A. Salmonella typhi

B. Klebsiella pneumoniae

C. Salmonella enteritidis

D. Clostridium botulinum

E. Brucella abortus

Answer: D. Salmonella typhi

A. Incorrect — Gartner's bacillus.

B. Incorrect — Preiz Nocard's bacillus in the supplied notes.

C. Incorrect — Shiga bacillus.

D. Correct — S. typhi causes typhoid fever and is known as Eberth's bacillus.

E. Incorrect — Friedlander's bacillus.

Typhoid bacillus or Eberth's bacillus refers to which organism?

A. Salmonella enteritidis

B. Salmonella typhimurium

C. Shigella dysenteriae

D. Salmonella typhi

E. Klebsiella pneumoniae

Answer: B. Clostridium botulinum

A. Incorrect — Causes tetanus.

B. Correct — Produces botulinum neurotoxin, which causes botulism.

C. Incorrect — Associated with gas gangrene and food poisoning.

D. Incorrect — Causes anthrax.

E. Incorrect — Causes brucellosis.

Which organism is most closely associated with botulism?

A. Clostridium tetani

B. Clostridium botulinum

C. Clostridium perfringens

D. Bacillus anthracis

E. Brucella abortus

Answer: E. Clostridium perfringens

A. Incorrect — Causes botulism.

B. Incorrect — Causes tetanus.

C. Incorrect — Causes brucellosis.

D. Incorrect — Causes typhoid fever.

E. Correct — C. perfringens is a major cause of clostridial myonecrosis or gas gangrene.

Which organism is associated with gas gangrene?

A. Clostridium botulinum

B. Clostridium tetani

C. Brucella abortus

D. Salmonella typhi

E. Clostridium perfringens

Answer: A. L. micdadei — Pittsburgh pneumonia agent

A. Correct — This is the correct pairing.

B. Incorrect — L. bozemanii is Wiga pneumonia agent.

C. Incorrect — M. pneumoniae is Eaton agent.

D. Incorrect — K. pneumoniae is Friedlander's bacillus.

E. Incorrect — S. enteritidis is Gartner's bacillus.

Which pair is correctly matched?

A. L. micdadei — Pittsburgh pneumonia agent

B. L. bozemanii — Eaton agent

C. M. pneumoniae — Wiga pneumonia agent

D. K. pneumoniae — Gartner's bacillus

E. S. enteritidis — Eberth's bacillus

Answer: C. C. perfringens — Bang's bacillus

A. Incorrect — This is correctly matched.

B. Incorrect — This is correctly matched.

C. Correct — This is incorrect; C. perfringens is Gas bacillus. Bang's bacillus is B. abortus.

D. Incorrect — This is correctly matched.

E. Incorrect — This is correctly matched.

Which pair is incorrectly matched?

A. C. botulinum — Canned goods bacillus

B. C. tetani — Tack head bacillus

C. C. perfringens — Bang's bacillus

D. B. abortus — Bang's bacillus

E. K. pneumoniae — Friedlander's bacillus

Answer: B. Salmonella typhi

A. Incorrect — S. enteritidis is associated with gastroenteritis and is Gartner's bacillus.

B. Correct — S. typhi causes typhoid fever.

C. Incorrect — Causes several infections, including pneumonia.

D. Incorrect — Associated with gas gangrene and food poisoning.

E. Incorrect — Causes atypical pneumonia.

Which organism is most appropriately associated with typhoid fever?

A. Salmonella enteritidis

B. Salmonella typhi

C. Klebsiella pneumoniae

D. Clostridium perfringens

E. Mycoplasma pneumoniae

Answer: D. Salmonella typhimurium

A. Incorrect — S. dysenteriae is Shiga bacillus.

B. Incorrect — S. typhi is Typhoid or Eberth's bacillus.

C. Incorrect — S. enteritidis is Gartner's bacillus.

D. Correct — This is the association in your supplied notes. Verify the spelling and attribution with your review reference because this historical name may be transcription-dependent.

E. Incorrect — S. sonnei is Duval's bacillus.

According to the supplied notes, Preiz Nocard's bacillus refers to which organism?

A. Shigella dysenteriae

B. Salmonella typhi

C. Salmonella enteritidis

D. Salmonella typhimurium

E. Shigella sonnei

Answer: A. Shigella dysenteriae

A. Correct — S. dysenteriae is known as Shiga bacillus.

B. Incorrect — S. flexneri is Strong bacillus.

C. Incorrect — S. boydii is Newcastle-Manchester bacillus.

D. Incorrect — S. sonnei is Duval's bacillus.

E. Incorrect — Typhoid or Eberth's bacillus.

Shiga bacillus refers to which organism?

A. Shigella dysenteriae

B. Shigella flexneri

C. Shigella boydii

D. Shigella sonnei

E. Salmonella typhi

Answer: C. Shigella flexneri

A. Incorrect — Shiga bacillus.

B. Incorrect — Duval's bacillus.

C. Correct — S. flexneri is known as Strong bacillus.

D. Incorrect — Newcastle-Manchester bacillus.

E. Incorrect — Preiz Nocard's bacillus in your supplied notes.

Strong bacillus refers to which organism?

A. Shigella dysenteriae

B. Shigella sonnei

C. Shigella flexneri

D. Shigella boydii

E. Salmonella typhimurium

Answer: E. Shigella boydii

A. Incorrect — Duval's bacillus.

B. Incorrect — Strong bacillus.

C. Incorrect — Shiga bacillus.

D. Incorrect — Eberth's bacillus.

E. Correct — S. boydii is Newcastle-Manchester bacillus.

Newcastle-Manchester bacillus is another name for which organism?

A. Shigella sonnei

B. Shigella flexneri

C. Shigella dysenteriae

D. Salmonella typhi

E. Shigella boydii

Answer: B. Shigella sonnei

A. Incorrect — Shiga bacillus.

B. Correct — S. sonnei is known as Duval's bacillus.

C. Incorrect — Strong bacillus.

D. Incorrect — Newcastle-Manchester bacillus.

E. Incorrect — Gartner's bacillus.

Duval's bacillus refers to which organism?

A. Shigella dysenteriae

B. Shigella sonnei

C. Shigella flexneri

D. Shigella boydii

E. Salmonella enteritidis

Answer: C. Burkholderia pseudomallei

A. Incorrect — E. corrodens is known as the Corroding bacterium.

B. Incorrect — H. influenzae is Pfeiffer's bacillus.

C. Correct — B. pseudomallei causes melioidosis and is called Whitmore's bacillus.

D. Incorrect — H. ducreyi is Chancroid bacillus.

E. Incorrect — A. aphrophilus is Foam-loving bacteria.

Whitmore's bacillus refers to which organism?

A. Eikenella corrodens

B. Haemophilus influenzae

C. Burkholderia pseudomallei

D. Haemophilus ducreyi

E. Aggregatibacter aphrophilus

Answer: A. Eikenella corrodens

A. Correct — E. corrodens is known as Corroding bacterium.

B. Incorrect — Whitmore's bacillus.

C. Incorrect — Chancroid bacillus.

D. Incorrect — Koch-Weeks' bacillus.

E. Incorrect — Pfeiffer's bacillus.

Corroding bacterium refers to which organism?

A. Eikenella corrodens

B. Burkholderia pseudomallei

C. Haemophilus ducreyi

D. Haemophilus aegyptius

E. Haemophilus influenzae

Answer: D. Haemophilus ducreyi

A. Incorrect — Pfeiffer's bacillus.

B. Incorrect — Koch-Weeks' bacillus.

C. Incorrect — Corroding bacterium.

D. Correct — H. ducreyi causes chancroid, a sexually transmitted genital ulcer disease.

E. Incorrect — Foam-loving bacteria.

Chancroid bacillus, associated with soft chancre, refers to which organism?

A. Haemophilus influenzae

B. Haemophilus aegyptius

C. Eikenella corrodens

D. Haemophilus ducreyi

E. Aggregatibacter aphrophilus

Answer: E. Haemophilus aegyptius

A. Incorrect — Chancroid bacillus.

B. Incorrect — Pfeiffer's bacillus.

C. Incorrect — Foam-loving bacteria.

D. Incorrect — Corroding bacterium.

E. Correct — H. aegyptius is known as Koch-Weeks' bacillus.

Koch-Weeks' bacillus refers to which organism?

A. Haemophilus ducreyi

B. Haemophilus influenzae

C. Aggregatibacter aphrophilus

D. Eikenella corrodens

E. Haemophilus aegyptius

Answer: B. Haemophilus influenzae

A. Incorrect — Koch-Weeks' bacillus.

B. Correct — H. influenzae is known as Pfeiffer's bacillus.

C. Incorrect — Chancroid bacillus.

D. Incorrect — Corroding bacterium.

E. Incorrect — Whitmore's bacillus.

Pfeiffer's bacillus refers to which organism?

A. Haemophilus aegyptius

B. Haemophilus influenzae

C. Haemophilus ducreyi

D. Eikenella corrodens

E. Burkholderia pseudomallei

Answer: C. Aggregatibacter aphrophilus

A. Incorrect — Corroding bacterium.

B. Incorrect — Pfeiffer's bacillus.

C. Correct — A. aphrophilus is associated with the name Foam-loving bacteria.

D. Incorrect — Chancroid bacillus.

E. Incorrect — Whitmore's bacillus.

Foam-loving bacteria refers to which organism in the supplied notes?

A. Eikenella corrodens

B. Haemophilus influenzae

C. Aggregatibacter aphrophilus

D. Haemophilus ducreyi

E. Burkholderia pseudomallei

Answer: A. Burkholderia pseudomallei

A. Correct — B. pseudomallei causes melioidosis.

B. Incorrect — Associated with human bite infections and other infections.

C. Incorrect — Causes infections such as meningitis and respiratory infections.

D. Incorrect — Causes bacillary dysentery.

E. Incorrect — Causes typhoid fever.

. A patient is diagnosed with melioidosis. Which organism is responsible?

A. Burkholderia pseudomallei

B. Eikenella corrodens

C. Haemophilus influenzae

D. Shigella dysenteriae

E. Salmonella typhi

Answer: E. Haemophilus ducreyi

A. Incorrect — Pfeiffer's bacillus.

B. Incorrect — Koch-Weeks' bacillus.

C. Incorrect — Corroding bacterium.

D. Incorrect — Foam-loving bacteria.

E. Correct — H. ducreyi causes chancroid.

Which organism is associated with chancroid?

A. Haemophilus influenzae

B. Haemophilus aegyptius

C. Eikenella corrodens

D. Aggregatibacter aphrophilus

E. Haemophilus ducreyi

Answer: B. S. dysenteriae — Shiga bacillus

A. Incorrect — S. flexneri is Strong bacillus.

B. Correct — This is the correct pairing.

C. Incorrect — S. boydii is Newcastle-Manchester bacillus.

D. Incorrect — S. sonnei is Duval's bacillus.

E. Incorrect — S. typhi is Eberth's bacillus.

Which pair is correctly matched?

A. S. flexneri — Duval's bacillus

B. S. dysenteriae — Shiga bacillus

C. S. boydii — Strong bacillus

D. S. sonnei — Newcastle-Manchester bacillus

E. S. typhimurium — Eberth's bacillus

Answer: C. B. pseudomallei — Whitmore's; E. corrodens — Corroding bacterium

A. Incorrect — The names are reversed.

B. Incorrect — The names are reversed.

C. Correct — Both pairs are correctly matched.

D. Incorrect — The names are reversed.

E. Incorrect — S. sonnei is Duval's; S. dysenteriae is Shiga.

Which group contains only correctly matched names?

A. H. influenzae — Koch-Weeks; H. aegyptius — Pfeiffer

B. H. ducreyi — Corroding bacterium; E. corrodens — Chancroid bacillus

C. B. pseudomallei — Whitmore's; E. corrodens — Corroding bacterium

D. A. aphrophilus — Pfeiffer's; H. influenzae — Foam-loving

E. S. sonnei — Shiga; S. dysenteriae — Duval's