Hearing unlike vision, often fades so gradually that we scarcely notice the change. We turn up the volume of our TV, cellphone or radio, perhaps not even noticing that we ask others to repeat themselves more frequently. It's a subtle shift, and rarely occurs overnight. In Africa, it is projected that hearing loss will affect as many as 338 million people by 2050, a significant increase from the current estimate of 39.9 million living with hearing loss challenges. Dr Kaitesi Batamuliza Mukara, at WHO Regional Office for Africa, discusses the causes of hearing loss.
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