River blindness treatment
Bildnummer 13472597
| Vitamin A capsule being squeezed into a child's mouth. This is part of a mass drug administration programme to treat river blindness, or onchocerciasis, and part of a strategy to eliminate the disease. River blindness is caused by the larvae of the parasitic roundworm Onchocerca volvulus, which is transmitted to humans via the bites of Simulium sp. black flies. After transmission the parasite larvae develop into adults in the skin, causing nodules. The adults breed and produce many larvae that spread throughout the body, including to the eyes. When the larvae die they produce a strong immune reaction that causes inflammation. It is this inflammation that causes blindness. The larvae absorb vitamin A from their host, potentially leading to deficiency. Photographed in Kabale, Uganda. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Crump, Andy |
| Bildgröße: | 3648 px × 2432 px |
| Modell-Rechte: | Derzeit liegt noch kein Release vor. Bitte kontaktieren Sie uns vor Verwendung. |
| Eigentums-Rechte: | nicht erforderlich |
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