Onchocerciasis

Onchocerciasis is a parasitic disease spread by blackflies near fast-flowing rivers, mainly affecting sub-Saharan Africa & parts of South America. Read more about Onchocerciasis, Meaning, Treatment, Symptoms, Latest News

Onchocerciasis
Table of Contents

Onchocerciasis Latest News

Niger becomes the first country in the African Region to eliminate onchocerciasis.

About Onchocerciasis

  • Onchocerciasis, or river blindness, is a disease caused by Onchocerca volvulus, a parasitic worm. 
  • The parasite can spread to humans through repeated bites of infected blackflies of the Simulium species. 
  • The flies breed by fast-flowing rivers and streams in certain remote, tropical, agricultural areas.
  • Onchocerciasis itself isn’t contagious because it can’t spread directly from one person to another. 
  • But the disease can spread when blackflies bite infected people, ingest the larvae, and then bite people who aren’t infected.
  • It is common throughout sub-Saharan Africa and certain areas of Brazil and Venezuela in South America. 
  • Symptoms include a potentially disfiguring skin rash and vision problems, even blindness.
  • Globally, it is second only to trachoma in causing infection-related blindness.
  • According to the World Health Organization (WHO), river blindness remains one of the most neglected tropical diseases, especially in remote and rural areas.
  • Treatment: Treatment for river blindness is ivermectin, an oral antiparasitic medication.

Source: NOA

Update Icon
Latest UPSC Exam 2026 Updates

Date IconLast updated on March, 2026

UPSC Final Result 2025 is now out.

→ UPSC has released UPSC Toppers List 2025 with the Civil Services final result on its official website.

Anuj Agnihotri secured AIR 1 in the UPSC Civil Services Examination 2025.

UPSC Marksheet 2025 is now out.

UPSC Notification 2026 & UPSC IFoS Notification 2026 is now out on the official website at upsconline.nic.in.

UPSC Calendar 2026 has been released.

→ Check out the latest UPSC Syllabus 2026 here.

UPSC Prelims 2026 will be conducted on 24th May, 2026 & UPSC Mains 2026 will be conducted on 21st August 2026.

→ The UPSC Selection Process is of 3 stages-Prelims, Mains and Interview.

→ Prepare effectively with Vajiram & Ravi’s UPSC Prelims Test Series 2026 featuring full-length mock tests, detailed solutions, and performance analysis.

→ Enroll in Vajiram & Ravi’s UPSC Mains Test Series 2026 for structured answer writing practice, expert evaluation, and exam-oriented feedback.

→ Join Vajiram & Ravi’s Best UPSC Mentorship Program for personalized guidance, strategy planning, and one-to-one support from experienced mentors.

Shakti Dubey secures AIR 1 in UPSC CSE Exam 2024.

→ Also check Best UPSC Coaching in India

Onchocerciasis FAQs

Q1. Onchocerciasis is caused by which organism?+

Q2. How is Onchocerciasis transmitted to humans?+

Q3. Which regions of the world are most affected by Onchocerciasis?+

Q4. What is the primary treatment for Onchocerciasis?+

Tags: onchocerciasis prelims pointers upsc current affairs upsc prelims current affairs

Vajiram Content Team
Vajiram Content Team
UPSC GS Course 2026
UPSC GS Course 2026
₹1,75,000
Enroll Now
GS Foundation Course 2 Yrs
GS Foundation Course 2 Yrs
₹2,45,000
Enroll Now
UPSC Mentorship Program
UPSC Mentorship Program
₹85000
Enroll Now
UPSC Sureshot Mains Test Series
UPSC Sureshot Mains Test Series
₹19000
Enroll Now
Prelims Powerup Test Series
Prelims Powerup Test Series
₹8500
Enroll Now
Enquire Now