Tissue nematodes

Which of the following are tissue nematodes?

• Trichinella spiralis

• Dracunculus medinensis

• Filariasis

• Loa Loa

• Onchocerciasis

This nematode is transmitted by eating undercooked pork and game meats and causes mild to severe diarrhea.

• Trichinella spiralis

• Loa Loa

• Wucheria bancrofti

• Brugia malayi

• Onchocerca volvulus

This nematodes specimen of choice for diagnosis is muscle biopsy with a finding of third stage larvae encyst in striated muscle and patients present with myositis, eosinophilia 40-50% in a differential.

• Trichinella spiralis

• Dracunculus medinesis

• Filariasis

• Loa loa

• Onchocerciasis

This is commonly known as the guinea worm and enters the body by ingesting water containing copepods with L3 larvae.

• T. spiralis

• D. medinensis

• W. bancrofti

• B. malayi

• Loa loa

This nematode is found in Africa and Asia; the fertilized female worm migrates to the surface of the skin causing a blister with severe burning and itching. Symptoms relieved when blister ruptures.

• T. spiralis

• D. medinensis

• Loa Loa

• B. malayi

• T. cani

What is the treatment for D. medinensis?

• Twist-stick method

• Muscle biopsy

• Mebendazole

• Antibiotics

• Supportive care

What parasite(s) cause lymphatic filariasis?

• Wucheria bancrofti

• Loa loa

• Brugia malayi

• O. volvulus

• T. spiralis

This parasite is found worldwide, transmitted via bites from flies/mosquitos and diagnosed by examination of thick and thin blood smears.

• W. bancrofti

• Loa loa

• D. medinensis

• T. spiralis

• O. volvulus

This parasites infective form are L3 filariform larva and adults produce a sheathed Microfilariae that reach the blood stream.

• T. spiralis

• O. volvulus

• B. malayi

• T. canis

What is Loa loa’s intermediate host?

• Tabanid fly

• Tse tse fly

• Mosquito

• Deer tick

• Black fly