Credit: NATIONAL INSTITUTES OF HEALTH/SCIENCE PHOTO LIBRARY

Caption: Onchocerciasis nematode roundworm. Light microscopy footage of a stage of the life cycle of the nematode roundworm Onchocerca volvulus that causes onchocerciasis (river blindness). This is a type of filariasis, caused by the tiny worms (microfiliariae) that are the larval stage in the life cycle of this roundworm. The larvae are spread by flies which breed in and around rivers, primarily in Africa. The adult worms (macrofiliariae) grow in the body and mate to produce the microfiliarae that cause an allergic reaction, causing blindness if near the eye. This clip is from a film published in 1967, with contributions by the National Institute of Health and Medical Research in Ghana.

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Keywords: 1900s, 1960s, 1967, 20th century, africa, african, black-and-white, clip, condition, disease, disorder, epidemiology, filariasis, film, footage, ghana, ghanian, life cycle, light micrograph, light microscopy, macrofiliariae, medicine, microfiliariae, monochrome, motion, mute, national institute of health and medical research, nematode roundworm, nematode worm, no-one, nobody, onchocerca volvulus, onchocerciasis, parasite, parasitology, pathological, pathology, river blindness, video

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Onchocerciasis nematode roundworm

K005/6495 Rights Managed

Downloadable master

Duration: 00:00:12

Frame size: 640x480

Frame rate: 29.97

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 72.8M

Original

Capture format: Unknown

Codec: MPEG-4 Video

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