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Onchocerciasis | River Blindness - Frequently Asked Questions

Q: Which Doctor Should I Consult for River Blindness / Onchocerciasis?

A: You should consult an infectious disease specialist for river blindness or onchocerciasis.

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Q: Which are the Areas where Onchocerciasis is More Common?

A: Onchocerciasis is prevalent in remote agricultural African regions close to the equator and in Yemen. Some cases have also been noted in the South American countries, Brazil and Venezuela.

Q: Why Onchocerciasis is called ‘River Blindness’?

A: Onchocerciasis is called river blindness since it can cause blindness and the blackfly which spreads the parasitic disease breeds in fast-flowing rivers and streams.

Q: Will I Contract the Infection if I Visit the Endemic Places for a Short Duration?

A: No. People get infected after repeated bites of the blackfly and therefore may get infected only if they stay in the endemic regions for prolonged durations.

Q: Is there a Vaccine to Prevent Onchocerciasis?

A: No. Currently there is no vaccine to prevent onchocerciasis.

Q: Is Onchocerciasis the Same as Filariasis?

A: Onchocerciasis, like Loa loa, is a type of filariasis that affects the subcutaneous tissues. Other types of filariasis are serous cavity filariasis which affects the abdominal cavity, and lymphatic filariasis.

Q: Is Nodding Syndrome Caused by Onchocerciasis?

A: Nodding syndrome is a condition that affects the brain and causes drooping of the head and seizure-like activity. Some cases of nodding syndrome have been associated with onchocerciasis, though it is still not clear if onchocerciasis plays a role in the development of nodding syndrome.

Q: Is Onchocerciasis Prevalent in India?

A: No, there are no cases of onchocerciasis in India.


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