Onchocerca volvulus is a nematode that causes onchocerciasis or "river blindness" mostly in Africa. Long-term corneal inflammation, or keratitis, leads to thickening of the corneal stroma which ultimately leads to blindness. Humans are the only definitive host for O. volvulus. The intermediate host or vector is the black fly (Simulium).
O. volvulus, along with most filarial nematodes, share an endosymbiotic relationship with the bacterium Wolbachia. In the absence of Wolbachia, larval development of the O. volvulus is disrupted or ceased.
The life cycle of O. volvulus begins when a parasitised female black fly of the genus Simulium takes a blood meal. The microfilariae form of the parasite found in the dermis of the host is ingested by the black fly. Here the microfilariae then penetrates the gut and migrates to thoracic flight muscles of the black fly, entering its first larval phase (J1). After maturing into J2, the second larval phase, it migrates to the proboscis where it can be found in the saliva. Saliva containing stage three (J3S) O. volvulus larvae passes into the blood of the host. From here the larvae migrate to the subcutaneous tissue where they form nodules and then mature into adult worms over a period of six to twelve months. After maturation, the smaller adult males migrate from nodules to subcutaneous tissue where they mate with the larger adult females, which then produce between 1,000 and 3,000 microfilariae per day. The normal adult worm lifespan is up to fifteen years. The eggs mature internally to form stage one microfilariae, which are released from the female's body one at a time and remain in the subcutaneous tissue.
Onchocerca volvulus | Onchocerciasis | River Blindness | Lifecycle, Symptoms, Treatment | Full Lec
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2:08 Morphology
5:30 Habitat
5:45 Transmission
5:56 Life Cycle
7:06 Diagrammatic Representation of Life Cycle
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...
published: 17 Aug 2022
Onchocerca volvulus Autosaved
published: 02 Apr 2018
Onchocerciasis - River Blindness
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published: 22 Feb 2020
Onchocerca Volvulus for the USMLE Step 1
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published: 14 Jun 2022
Onchocerca Volvulus
Learn all about onchocerca in this crazy scene about Uncle Circle - a fun uncle whose nephews are super excited to see! Fun and MEMORABLE!
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Histopathology Soft tissue--Onchocerca volvulus
Histopathology Soft tissue--Onchocerca volvulus
published: 22 May 2007
The Fly Catchers fighting river blindness
Onchocerciasis, commonly known as river blindness, is a parasitic disease transmitted by the bites of the black flies, the flies breed in fast-flowing rivers and streams.
As the parasites reproduce, hundreds of thousands of larvae spread throughout the person's body. These grow into adult worms, up to 30cm long Eventually it leads to blindness.
Charles and John work as fly catchers in Uganda. Their job involves catching the flies before getting bitten, they distribute medicine to the community and spray the river with eco-friendly chemicals.
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published: 12 Oct 2016
Onchocerca volvulus life cycle
Onchocerca volvulus life cycle
Course: Diagnostic Parasitology
published: 01 Aug 2021
Parasitic Diseases Lectures #29: Onchocercaiasis
Dickson and Daniel discuss onchocercaiasis, or river blindness, caused by Onchocerca volvulus.
published: 10 Mar 2018
onchocerciasis | River blindness | Life cycle, symptoms and treatment | Bio science
#onchocerciasis #volvulus
onchocerciasis | River blindness | Life cycle, symptoms and treatment | Bio science
Onchocerciasis is an eye and skin disease caused by a worm (filaria) known scientifically as Onchocerca volvulus. It is transmitted to humans through the bite of a blackfly (simulium species). These flies breed in fast-flowing streams and rivers, increasing the risk of blindness to individuals living nearby, hence the commonly known name of "river blindness". Within the human body, the adult female worm (macrofilaria) produces thousands of baby or larval worms (microfilariae) which migrate in the skin and the eye.
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Assalamualaikum everyone!
I hope you all are doing well. Today, I am lecturing you on Onchocerca volvulus, its morphology, lifecycle, habitat & transmission, pa...
Assalamualaikum everyone!
I hope you all are doing well. Today, I am lecturing you on Onchocerca volvulus, its morphology, lifecycle, habitat & transmission, pathogenesis, epidemiology, clinical findings, complications, lab diagnosis, treatment & prevention. I hope you'll find this video helpful. Share your valuable feedback in the comments. Don't forget to like, share, and subscribe to my YouTube channel.
Cheers!
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TIMESTAMPS:
00:00 Intro
00:44 Onchocerca volvulus
1:30 Lecture Outline
1:50 Stages in the Lifecycle of Onchocerca volvulus
2:08 Morphology
5:30 Habitat
5:45 Transmission
5:56 Life Cycle
7:06 Diagrammatic Representation of Life Cycle
8:34 Pathogenesis
10:21 Epidemiology
10:48 Clinical Findings
11:36 Complications
11:41 Lab Diagnosis
12:14 Treatment
12:42 Prevention
12:53 Review
14:04 Socials
_________________________________
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☆Introduction to parasitology: https://youtu.be/usRreLvt5eE
☆Introduction to Cestodes: https://youtu.be/BlwSi41CtBo
☆Introduction to Trematodes: https://youtu.be/hWBsmNpX7R4
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#onchocercavolvulus #onchocerciasis #riverblindness #nematode #roundworms #microbiology #medzukhruf #studymedicinewithme #medicalstudents #nematology #nematodes #medicalmicrobiology #hanginggroin
Assalamualaikum everyone!
I hope you all are doing well. Today, I am lecturing you on Onchocerca volvulus, its morphology, lifecycle, habitat & transmission, pathogenesis, epidemiology, clinical findings, complications, lab diagnosis, treatment & prevention. I hope you'll find this video helpful. Share your valuable feedback in the comments. Don't forget to like, share, and subscribe to my YouTube channel.
Cheers!
Free Parasito Handouts:
Fill out this form to get your copy directly in your inbox: https://forms.gle/6CqCinMM2Jo2eDKLA
TIMESTAMPS:
00:00 Intro
00:44 Onchocerca volvulus
1:30 Lecture Outline
1:50 Stages in the Lifecycle of Onchocerca volvulus
2:08 Morphology
5:30 Habitat
5:45 Transmission
5:56 Life Cycle
7:06 Diagrammatic Representation of Life Cycle
8:34 Pathogenesis
10:21 Epidemiology
10:48 Clinical Findings
11:36 Complications
11:41 Lab Diagnosis
12:14 Treatment
12:42 Prevention
12:53 Review
14:04 Socials
_________________________________
Videos
☆Introduction to parasitology: https://youtu.be/usRreLvt5eE
☆Introduction to Cestodes: https://youtu.be/BlwSi41CtBo
☆Introduction to Trematodes: https://youtu.be/hWBsmNpX7R4
☆Introduction to Nematodes: https://youtu.be/Oh0I4MXzVeM
☆Cryptosporidium: https://youtu.be/eAEhzASje7Y
_________________________________
AMAZON RECOMMENDATIONS:
📚 Books
Review of Medical Microbiology and Immunology: https://amzn.to/44gyZ08
Clinical Microbiology Made Ridiculously Simple: https://amzn.to/44B7tKC
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☆Blog: https://medzukhruf.blogspot.com/
_________________________________
Disclaimer: This video is for educational purposes only. Things and treatments may change with time. Consult your doctor for any advice.
_________________________________
#onchocercavolvulus #onchocerciasis #riverblindness #nematode #roundworms #microbiology #medzukhruf #studymedicinewithme #medicalstudents #nematology #nematodes #medicalmicrobiology #hanginggroin
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Keep calm and watch Physeo https://physeo.com/
Better than Sketchy, and completely free. Watch our entire microbiology library right here on YouTube, for free, forever.
Keep calm and watch Physeo https://physeo.com/
Onchocerciasis, commonly known as river blindness, is a parasitic disease transmitted by the bites of the black flies, the flies breed in fast-flowing rivers an...
Onchocerciasis, commonly known as river blindness, is a parasitic disease transmitted by the bites of the black flies, the flies breed in fast-flowing rivers and streams.
As the parasites reproduce, hundreds of thousands of larvae spread throughout the person's body. These grow into adult worms, up to 30cm long Eventually it leads to blindness.
Charles and John work as fly catchers in Uganda. Their job involves catching the flies before getting bitten, they distribute medicine to the community and spray the river with eco-friendly chemicals.
- Subscribe to our channel: http://bit.ly/AJSubscribe
- Follow us on Twitter: https://twitter.com/AJEnglish
- Find us on Facebook: https://www.facebook.com/aljazeera
- Check our website: http://www.aljazeera.com/
Onchocerciasis, commonly known as river blindness, is a parasitic disease transmitted by the bites of the black flies, the flies breed in fast-flowing rivers and streams.
As the parasites reproduce, hundreds of thousands of larvae spread throughout the person's body. These grow into adult worms, up to 30cm long Eventually it leads to blindness.
Charles and John work as fly catchers in Uganda. Their job involves catching the flies before getting bitten, they distribute medicine to the community and spray the river with eco-friendly chemicals.
- Subscribe to our channel: http://bit.ly/AJSubscribe
- Follow us on Twitter: https://twitter.com/AJEnglish
- Find us on Facebook: https://www.facebook.com/aljazeera
- Check our website: http://www.aljazeera.com/
#onchocerciasis #volvulus
onchocerciasis | River blindness | Life cycle, symptoms and treatment | Bio science
Onchocerciasis is an eye and skin disease caused ...
#onchocerciasis #volvulus
onchocerciasis | River blindness | Life cycle, symptoms and treatment | Bio science
Onchocerciasis is an eye and skin disease caused by a worm (filaria) known scientifically as Onchocerca volvulus. It is transmitted to humans through the bite of a blackfly (simulium species). These flies breed in fast-flowing streams and rivers, increasing the risk of blindness to individuals living nearby, hence the commonly known name of "river blindness". Within the human body, the adult female worm (macrofilaria) produces thousands of baby or larval worms (microfilariae) which migrate in the skin and the eye.
Kindly share this video to your friends :-
https://youtu.be/t7iPbln-9rg
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Onchocerciasis
Onchocerca volvulus
Parasitic diseases
Parasites
Worms
River blindness
Alampally phanindra
Phanindra gupta
onchocerca volvulus
river blindness
tropical disease
onchocerciasis
onchocerciasis esophagogastroduodenoscopy
onchocerciasis life cycle
onchocerca volvulus life cycle
Bio science
#onchocerciasis #volvulus
onchocerciasis | River blindness | Life cycle, symptoms and treatment | Bio science
Onchocerciasis is an eye and skin disease caused by a worm (filaria) known scientifically as Onchocerca volvulus. It is transmitted to humans through the bite of a blackfly (simulium species). These flies breed in fast-flowing streams and rivers, increasing the risk of blindness to individuals living nearby, hence the commonly known name of "river blindness". Within the human body, the adult female worm (macrofilaria) produces thousands of baby or larval worms (microfilariae) which migrate in the skin and the eye.
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Onchocerciasis
Onchocerca volvulus
Parasitic diseases
Parasites
Worms
River blindness
Alampally phanindra
Phanindra gupta
onchocerca volvulus
river blindness
tropical disease
onchocerciasis
onchocerciasis esophagogastroduodenoscopy
onchocerciasis life cycle
onchocerca volvulus life cycle
Bio science
Assalamualaikum everyone!
I hope you all are doing well. Today, I am lecturing you on Onchocerca volvulus, its morphology, lifecycle, habitat & transmission, pathogenesis, epidemiology, clinical findings, complications, lab diagnosis, treatment & prevention. I hope you'll find this video helpful. Share your valuable feedback in the comments. Don't forget to like, share, and subscribe to my YouTube channel.
Cheers!
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TIMESTAMPS:
00:00 Intro
00:44 Onchocerca volvulus
1:30 Lecture Outline
1:50 Stages in the Lifecycle of Onchocerca volvulus
2:08 Morphology
5:30 Habitat
5:45 Transmission
5:56 Life Cycle
7:06 Diagrammatic Representation of Life Cycle
8:34 Pathogenesis
10:21 Epidemiology
10:48 Clinical Findings
11:36 Complications
11:41 Lab Diagnosis
12:14 Treatment
12:42 Prevention
12:53 Review
14:04 Socials
_________________________________
Videos
☆Introduction to parasitology: https://youtu.be/usRreLvt5eE
☆Introduction to Cestodes: https://youtu.be/BlwSi41CtBo
☆Introduction to Trematodes: https://youtu.be/hWBsmNpX7R4
☆Introduction to Nematodes: https://youtu.be/Oh0I4MXzVeM
☆Cryptosporidium: https://youtu.be/eAEhzASje7Y
_________________________________
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Review of Medical Microbiology and Immunology: https://amzn.to/44gyZ08
Clinical Microbiology Made Ridiculously Simple: https://amzn.to/44B7tKC
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BRS Microbiology and Immunology: https://amzn.to/3Q12E9w
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Disclaimer: This video is for educational purposes only. Things and treatments may change with time. Consult your doctor for any advice.
_________________________________
#onchocercavolvulus #onchocerciasis #riverblindness #nematode #roundworms #microbiology #medzukhruf #studymedicinewithme #medicalstudents #nematology #nematodes #medicalmicrobiology #hanginggroin
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Onchocerciasis, commonly known as river blindness, is a parasitic disease transmitted by the bites of the black flies, the flies breed in fast-flowing rivers and streams.
As the parasites reproduce, hundreds of thousands of larvae spread throughout the person's body. These grow into adult worms, up to 30cm long Eventually it leads to blindness.
Charles and John work as fly catchers in Uganda. Their job involves catching the flies before getting bitten, they distribute medicine to the community and spray the river with eco-friendly chemicals.
- Subscribe to our channel: http://bit.ly/AJSubscribe
- Follow us on Twitter: https://twitter.com/AJEnglish
- Find us on Facebook: https://www.facebook.com/aljazeera
- Check our website: http://www.aljazeera.com/
#onchocerciasis #volvulus
onchocerciasis | River blindness | Life cycle, symptoms and treatment | Bio science
Onchocerciasis is an eye and skin disease caused by a worm (filaria) known scientifically as Onchocerca volvulus. It is transmitted to humans through the bite of a blackfly (simulium species). These flies breed in fast-flowing streams and rivers, increasing the risk of blindness to individuals living nearby, hence the commonly known name of "river blindness". Within the human body, the adult female worm (macrofilaria) produces thousands of baby or larval worms (microfilariae) which migrate in the skin and the eye.
Kindly share this video to your friends :-
https://youtu.be/t7iPbln-9rg
Subscribe to my channel for more other videos :-
https://www.youtube.com/channel/UC6f6uufF5g_caYnMO72ezKg?view_as=subscriber
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Onchocerciasis
Onchocerca volvulus
Parasitic diseases
Parasites
Worms
River blindness
Alampally phanindra
Phanindra gupta
onchocerca volvulus
river blindness
tropical disease
onchocerciasis
onchocerciasis esophagogastroduodenoscopy
onchocerciasis life cycle
onchocerca volvulus life cycle
Bio science
Onchocerca volvulus is a nematode that causes onchocerciasis or "river blindness" mostly in Africa. Long-term corneal inflammation, or keratitis, leads to thickening of the corneal stroma which ultimately leads to blindness. Humans are the only definitive host for O. volvulus. The intermediate host or vector is the black fly (Simulium).
O. volvulus, along with most filarial nematodes, share an endosymbiotic relationship with the bacterium Wolbachia. In the absence of Wolbachia, larval development of the O. volvulus is disrupted or ceased.
The life cycle of O. volvulus begins when a parasitised female black fly of the genus Simulium takes a blood meal. The microfilariae form of the parasite found in the dermis of the host is ingested by the black fly. Here the microfilariae then penetrates the gut and migrates to thoracic flight muscles of the black fly, entering its first larval phase (J1). After maturing into J2, the second larval phase, it migrates to the proboscis where it can be found in the saliva. Saliva containing stage three (J3S) O. volvulus larvae passes into the blood of the host. From here the larvae migrate to the subcutaneous tissue where they form nodules and then mature into adult worms over a period of six to twelve months. After maturation, the smaller adult males migrate from nodules to subcutaneous tissue where they mate with the larger adult females, which then produce between 1,000 and 3,000 microfilariae per day. The normal adult worm lifespan is up to fifteen years. The eggs mature internally to form stage one microfilariae, which are released from the female's body one at a time and remain in the subcutaneous tissue.
Caused by a parasitic worm called Onchocerca volvulus, human onchocerciasis is a disease of the skin and eye spread through repeated bites of an infected blackfly known scientifically as Simulium ... .
Dr ... One of the most well-known diseases transmitted by black flies is onchocerciasis, also known as "river blindness," caused by the nematode Onchocerca volvulus, which is native to Africa ... Black flies can be found on all continents except Antarctica.
It is currently thought that the parasitic nematode worm, Onchocerca volvulus, may be at the root of the syndrome ... volvulus is known to cause onchocerciasis, or river blindness, and infests all the areas affected by Nodding syndrome.
River blindness is known to have a serious socioeconomic impact on affected communities ... Onchocerciasis, commonly known as “river blindness”, is a neglected tropical disease caused by the worm Onchocerca volvulus ... Osei. .