PARASITOLOGY: 4th Shifting Samplex

All of the following are characteristics of insects except? A. Body divided into head, thorax and abdomen B. Adults have 3 pairs of legs C. May possess antennae and wings D. Eggs hatch into 6 legged larvae which develops through the nymphal stage to adults

D. Eggs hatch into 6 legged larvae which develops through the nymphal stage to adults

Most arthropods of medical importance bite humans and suck blood hence they are called: A. Coprophagous B. Hematophagous C. Omniphagous D. Carnivorous

B. Hematophagous

Of all arthropods only the larvae of certain flies (diptera) are adapted to invade and consume the tissue of vertebrate host, an infestation by any of these fly's larva is known as: A. Myiasis B. Ascaris C. Pediculosis D. Biocenosis

A. Myiasis

Mosquitos transmit arthropod-borne viruses which of the following mosquitos transmit Japanese encephalitis A. Aedes aegypti B. Anopheles spp C. Culex tritaeniorynchus

C. Culex tritaeniorynchus

Which of the following diseases is not louse-borne or transmitted by lice? A. epidemic relapsing fever B. epidemic typhus C. Query of Q fever D. trench fever

C. Query of Q fever

Rickettsiae are extremely small coccobacilli which are obligate intracellular parasites of arthropods. How are these organisms transmitted by arthropods? A. ticks and mites by direct inoculation through arthropod saliva B. fleas and lice by crushing or defecation of feces of infected arthropods to human skin C. both a and b D. Neither A nor B

C. both a and b

Although vectors typically acquire a pathogen only by feeding on an infected host, there are a few species that pass infection through the egg stage from generation to generation. This type of transmission occurs most commonly in ticks. A. transoviral transmission B. transtadial transmission C. metacyclic transmission D. cyclozoonotic transmission

A. transoviral transmission

Causing cimicosis A. Sarcoptes scabiei B. Pediculus humanus capitis C. Phthirus pubis D. None of those mentioned

D. None of those mentioned

Drug/s of choice for protozoans A. Amphotericin B B. Metronidazole C. Both A or B D. Neither A nor B

B. Metronidazole

Orientia tsutsugamushii, the causative agent of scrub typhus in Asia-Pacific region is transmitted by the larval form of this arthropod vector. A. Allodermanyssus sanguineus B. Pediculus humanus corporis C. Xenopsylla cheopis D. Leptotrombidium spp

D. Leptotrombidium spp

The term for mite infestation e.g. Sarcoptes scabiei is aptly called: A. arachnidosis B. myiasis C. acariasis D. pediculosis

C. acariasis

Permethrin is a topical medicine that can be used in treating infestation of ___. A. Scabies B. C. Both A and B D. Neither A nor B

C. Both A and B

Drug of choice for pinworm A. Pyrantel B. Albendazole C. Both a and b D. Neither a nor b

C. Both A and B

Drug of choice for blood fluke infection A. Pyrantel B. Albendazole C. Both A and B D. Neither A nor B

D. Neither A nor B

Drug of choice for toxoplasmosis infection A. Co-trimoxazole B. Folic acid C. Both a and b D. Neither a nor b

A. Co-trimoxazole

Praziquantel is the drug of choice for trematodes. However in what kind of fluke does praziquantel is not recommended? A. Blood fluke B. Lung fluke C. Intestinal fluke D. Liver fluke

A. Blood fluke

Drug of choice for hookworm infection A. Pyrantel B. Albendazole C. Both A and B D. Neither A nor B

C. Both A and B

Drug of choice for Giant roundworm A. Pyrantel B. Albendazole C. Both a and b D. Neither A nor B

C. Both A and B

Combined with an anti-filarial drug for elimination of lymphatic filariasis A. pyrantel B. Albendazole C. Both A and B D. Neither A nor B

B. Albendazole

Drug of choice for asymptomatic cyst passer: A. Metronidazole B. Secnidazole C. Diloxanide D. Co-Trimoxazole

C. Diloxanide

The drug of choice in severe malaria is: A. chloroquine B. Artemether-lumefantrine C. Quinine D. Pyrimethamine-sulfadoxine

C. Quinine

Drug for malaria that could be used as prophylactic and therapeutic A. Artemisinin-based combination B. Chloroquine C. Quinine D. Doxycycline

D. Doxycycline

Additional treatment and management for Tissue nematode infection, except: A. Bed rest and supportive management B. Prednisone 20mg TID, tapered 2-3 weeks C. Thiabendazole 25mg/kg BID for 5 days D. Mebendazole 20mg/kg every 6hrs

D. Mebendazole 20mg/kg every 6hrs

A 1 year old male child presented with globular abdomen, complaining of abdominal pain with associated vomiting and passage of intestinal worm. The child is usually left alone on the floor, crawling and playing soil. What is the drug of choice for him? A. Albendazole 400mg 1 tablet as single dose B. Mebendazole 100mg 1 tablet as single dose C. Mebendazole 500mg 1 tablet as single dose D. Albendazole 400mg half tablet as single dose

A. Albendazole 400mg 1 tablet as single dose

The objectives in the treatment of intestinal amoebiasis are the following, except: A. To cure invasive disease at intestinal sites B. To eliminate the passage of cysts from the intestinal lumen C. To cure amoebiasis at extra-intestinal sites D. To eradicate the relapse of amoebiasis

D. To eradicate the relapse of amoebiasis

What is the gold standard in malarial diagnosis A. Microscopy

A. Microscopy

Associated with semi quantitative stool examination A. Direct fecal smear B. Kato-katz C. Formalin ether concen technique D. None of those mentioned

B. Kato-katz

Use of glycerine A. DFS B. Kato-katz C. FECT D. None of those mentioned

B. Kato-katz

Kato katz method makes use of the following except: A. Cellophane in glycerine B. Screen C. Template D. Cover slip

D. Cover slip

Arithmetic or geometric mean A. prevalence B. incidence C. Egg count D. none of those mentioned

C. Egg count

Best for diagnosis of asymptomatic protozoan infections A. DFS B. Kato katz C. FECT D. None of those mentioned

C. FECT

Basis of light, moderate and heavy intensities of infection A. Prevalence B. Incidence C. Egg count D. None of those mentioned

C. Egg count

What are the diagnostic tests recommended for implementation in frontline and health facilities like hospitals and local health units? A. DFS B. Kato thick smear C. Kato katz method D. DFS + Kato thick smear

D. DFS + Kato thick smear

The targeted acceptable sensitivity of a microscopist is at least: A. 50% B. 75% C. 80% D. 90%

D. 90%

Computed as per 1,000 or 100,000 individuals A. Prevalence B. Incidence C. Egg count D. None of those mentioned

B. Incidence

Use of normal saline solution A. Direct fecal smear B. Kato katz method C. Formalin Ether Concentration technique D. None of those mentioned

A. Direct fecal smear

Associated with percentage of examined A. Prevalence B. Incidence C. Egg count D. None of those mentioned

A. Prevalence

Which of the following does not explain low sensitivity of microscopy? A. Blurred high power objective of the microscope B. Low intensity infection C. Lack of training and experience of microscopist D. None of those mentioned

D. None of those mentioned

According to the DOH, what is the recommended diagnostic test for screening of food handlers? A. Direct fecal smear B. Kato thick smear C. Kato katz method D. Formalin Ether Concentration technique

A. Direct fecal smear

Persistence of soil transmitted helminthiasis and schistosomiasis in communities may indicate the following except: A. Poor environmental sanitation B. Occupational exposure C. Low coverage of mass treatment D. nota

D. nota

Local initiatives in improving environmental sanitation may include: A. Providing clean water B. Ensuring RHU monitors sanitary toilet coverage and utilization C. both a and b D. Neither A nor B

C. both a and b

Quantitative diagnosis A. Prevalence B. Incidence C. Egg count D. None of those mentioned

C. Egg count

Associated with burden of infection A. Prevalence B. Incidence C. Egg count D. None of those mentioned

C. Egg count

Raw count multiplied by 24 A. Prevalence B. Incidence C. Egg count D. None of those mentioned

C. Egg count

Infection or parasite rate A. Prevalence B. Incidence C. Egg count D. None of those mentioned

A. Prevalence

Which of the following age groups is not targeted by mass drug administration for schistosomiasis in the Philippines? A. 1 to <5 years old B. 5 to 14 years old C. 15 to 45 years old D. 46 to 65 years old

A. 1 to <5 years old

The following are the modes of preventive chemotherapy for soil transmitted helminthiasis and schistosomiasis that are recommended in the Philippines except: A. selective treatment B. mass deworming of preschool and school age children C. deworming of pregnant women D. none of those mentioned

D. none of those mentioned

Best for monitoring STH and schistosomiasis control program A. Direct fecal smear B. Kato Katz method C. Formalin Ether Concentration Technique D. None of those mentioned

B. Kato Katz method

Pre-school and school age children are at risk of STH infections because of: A. poor personal hygiene B. lack of personal protection C. Both A and B D. Neither A nor B

C. Both A and B

Associated with acute pancreatitis A. Ascaris B. Trichuris C. Both A and B D. Neither A and B

A. Ascaris

Attached to bowel wall A. Ascaris B. Trichuris C. Both A and B D. Neither A nor B

B. Trichuris

Associated with abdominal pain A. Ascaris B. Trichuris C. Both A and B D. Neither A nor B

C. Both A and B

Perianal pruritus A. Ascaris B. Trichuris C. Both A and B D. Neither A nor B

D. Neither A nor B

Usually inhabits large intestine A. Ascaris B. Trichuris C. Both A and B D. Neither A nor B

B. Trichuris

Associated with cholecystitis A. Ascaris B. Trichuris C. Both A and B D. Neither A nor B

A. Ascaris

Associated with flask-shaped ulcer in Colon A. Ascaris B. Trichuris C. Both A and B D. neither A nor B

D. neither A nor B

Chronic infections cause stunting A. Ascaris B. Trichuris C. Both A and B D. Neither A nor B

C. Both A and B

Associated with portal hypertension A. Ascaris B. Trichuris C. Both A and B D. Neither A nor B

D. Neither A nor B

Usually inhabits small intestine A. Ascaris B. Trichuris C. Both A and B D. Neither A nor B

A. Ascaris