17 Questions
What is the causative agent of Onchocerciasis?
Onchocerca volvulus
Where do Loiasis adult filariae commonly reside?
In subcutaneous connective tissues
What is the intermediate host for Onchocerciasis?
Blackfly
Which nematode causes Loiasis?
Loa loa
How are third-stage filarial larvae introduced into the human host in Onchocerciasis?
By blackflies
Where can microfilariae be found to diagnose Onchocerciasis?
In skin snips or biopsy specimens
What is the causative agent of paragonimiasis?
Paragonimus westermani
When does the diagnosis of Loa loa infection exhibit diurnal periodicity?
Mid-day (10 AM-2 PM)
In which host do cercariae invade in the life cycle of Paragonimus westermani?
Second intermediate host
What is the mode of transmission of Paragonimus westermani to humans?
Ingestion of undercooked pork
Which sign can aid in the diagnosis of Loa loa infection?
Calabar swellings
What is the intermediate host for Paragonimus westermani before invading the second intermediate host?
Snail
Which type of animals are humans considered as in relation to E. multilocularis infection?
Intermediate hosts
Which of the following is the primary definitive host species for E. multilocularis?
Red foxes
Which of the following tests is most sensitive for detecting antibodies in serum of patients with cystic disease caused by E. multilocularis?
Enzyme immunoassays (EIA) with Em2 antigen
Which of the following is NOT a method for definitive hosts to become infected with E. multilocularis?
Direct contact with infected definitive hosts
Which of the following animals is NOT a competent definitive host for E. multilocularis?
Cervids
Test your knowledge on diagnosing Loa loa infection in humans. Learn about how filarial larvae are introduced into the skin during a blood meal and the diagnostic features such as microfilaria in blood smears and Calabar swellings.
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