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Questions and Answers
What is the preferred method of collecting stool specimens for the recovery of vibrios?
What is the preferred method of collecting stool specimens for the recovery of vibrios?
- Collecting stools through rectal swabs
- Collecting stools early in the course of the diarrheal illness (correct)
- Collecting stools during the later stages of diarrheal illness
- Mixing stool specimens with a polyvalent O1 antiserum
What is the characteristic motility observed in V.cholerae O1 under dark-field or phase-contrast microscopy?
What is the characteristic motility observed in V.cholerae O1 under dark-field or phase-contrast microscopy?
- Random motility
- Gull wing motility
- Darting motility
- Shooting star motility (correct)
What is the primary purpose of using a polyvalent O1 antiserum in detecting V.cholerae O1?
What is the primary purpose of using a polyvalent O1 antiserum in detecting V.cholerae O1?
- To enhance the motility of the organism
- To inhibit the growth of the organism
- To confirm the identity of the organism (correct)
- To detect the presence of antibodies
What is the temperature required for incubating agar medium for isolating C.fetus?
What is the temperature required for incubating agar medium for isolating C.fetus?
What is the primary method of diagnosing H.pylori infection?
What is the primary method of diagnosing H.pylori infection?
What specimen is typically taken for culture in cases of possible meningitis?
What specimen is typically taken for culture in cases of possible meningitis?
Which staining method may be more useful for examining material from suspected buboes or positive blood cultures?
Which staining method may be more useful for examining material from suspected buboes or positive blood cultures?
What temperature favors the growth of Y.pestis on culture media?
What temperature favors the growth of Y.pestis on culture media?
Which of the following tests is likely to be positive within 24 hours in cases like Y.pestis infection?
Which of the following tests is likely to be positive within 24 hours in cases like Y.pestis infection?
What is the best method for definitive identification of Y.pestis cultures?
What is the best method for definitive identification of Y.pestis cultures?
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