13 - leptospirosis mcqs

Question 1
Which of these is not an alternative name for Leptospirosis?
Icterohemorrhagic fever
Rice-field fever
Mud fever
Cattle fever----------

Question 2
Leptospirosis in human rarely occurs through:
Direct contact with contaminated animal urine
Indirect contact with contaminated animal urine
Contact with contaminated human urine-----------
Contact with contaminated soil

Question 3
Which of these groups is at increased risk of Leptospirosis?
Swimmers
Sewer workers
Farmers
All the above-----------

Question 4
Incubation period for leptospirosis is:
2 - 6 days
2 - 16 days
2 - 26 days-------
2 - 36 days

Question 5
Ocular manifestations common in anicteric leptospirosis are:
Conjunctival suffusion
Retro orbital pain
Photophobia
All the above----------

Question 6
Leptospirosis disease is maintained in infected animals by:
Chronic infection of renal tubules------------
Chronic infection of intestinal tract
Chronic infection of blood
Chronic infection of cerebrospinal fluid

Question 7
Which of these statements is not true with regard to leptospires?
They are straight spirochetes-----------
They are obligate aerobes
Optimum growth temperature is 28-300 C
May be stained using carbol fuchsin counterstain

Question 8
In humans leptospires can be detected in:
Urine
Blood
Cerebrospinal fluid
All of the above----------

Question 9
Which of these is not true regarding laboratory findings in anicteric phase of Leptospirosis?
Erythrocyte sedimentation rate (ESR) is reduced------------
White blood cells (WBC) range from below normal to moderately elevated
Aminotransferases are elevated
Alkaline phosphatases are elevated

Question 10
How many days after infection with leptospires do the urine cultures become positive?
First week of illness
Second week of illness----------
Third week of illness
Fourth week of illness

Question 11
For isolation of leptospires, blood culture should be taken:
As soon as possible after patient’s presentation--------
Second week after patient’s presentation
Third week after patient’s presentation
Fourth week after patient’s presentation

Question 12
Cultures for leptospires should be examined for how many weeks before being discarded?
Upto 3 weeks
Upto 7 weeks
Upto 11 weeks
Upto 13 weeks---------------

Question 13
Antibodies in blood can be detected how many days after onset of symptoms?
1 - 2 days
5 - 7 days-----------
9 - 11 days
13 - 15 days

Question 14
Antibiotic given to prevent leptospirosis is:
Doxycycline-----------
Ampicillin
Penicillin
Erythromycin

Question 15
Anicteric leptospirosis is treated with:
Doxycycline 100 mg bid
Ampicillin 500-750 mg bid
Amoxicillin 500 mg bid
Any of the above----------

Question 16
Dose of ampicillin for treating Icteric leptospirosis is:
IV ampicillin one gram od
IV ampicillin one gram bd
IV ampicillin one gram tds
IV ampicillin one gram qid----------------