What is Onchocerciasis? - Pathology mini tutorial

Onchocerciasis is also known as river blindness. It is caused by infection with Onchocerca Volvulus. This is a microfilarial nematode (worm). Black flies that breed along streams and rivers transmit the parasite from ingested blood from people already infected with the disease. Onchocerciasis is the commonest cause of preventable blindness in Sub-Saharan Africa.
0:00 Intro
0:10 What is onchocerciasis? Where does it occur How many people are affected
1:10 Life cycle of Onchocerca volvulus
1:37 Clinical problems caused by onchocerciasis
2:14 Histological features of onchocerciasis
2:50 Skin biopsy histology image of onchocercal dermatitis including microfilariae
3:25 Histology image of onchocercoma