Onchocerciasis Hyperendemicity in Ovia Northeast, Edo State, Nigeria

| Posted in: Science

Journal name: The Malaysian Journal of Medical Sciences
Original article title: Hyperendemicity of Onchocerciasis in Ovia Northeast Local Government Area, Edo State, Nigeria
The Malaysian Journal of Medical Sciences (MJMS) is a peer-reviewed, open-access journal published online at least six times a year. It covers all aspects of medical sciences and prioritizes high-quality research.
This page presents a generated summary with additional references; See source (below) for actual content.

Original source:

This page is merely a summary which is automatically generated hence you should visit the source to read the original article which includes the author, publication date, notes and references.

Author:

Frederick Olusegun Akinbo, Christopher Ehis Okaka


The Malaysian Journal of Medical Sciences:

(A peer-reviewed, open-access journal)

Full text available for: Hyperendemicity of Onchocerciasis in Ovia Northeast Local Government Area, Edo State, Nigeria

Year: 2010

Copyright (license): CC BY 4.0


Download the PDF file of the original publication


Summary of article contents:

Introduction

Onchocerciasis, caused by the filarial nematode Onchocerca volvulus, poses a significant public health challenge, particularly in Africa where over 99% of almost 18 million reported cases were located by 2001. Nigeria, the most endemic country, is known to harbor about 10 million cases, primarily transmitted by the Simulium damnosum mosquito. The Ovia Northeast Local Government Area (LGA) in Edo State, Nigeria, was identified as an area requiring further investigation into the prevalence and symptomatic effects of onchocerciasis, especially since ivermectin distribution began there in 1998 to mitigate its consequences.

High Prevalence of Onchocerciasis

The study conducted between March 2008 and June 2009 observed an alarming prevalence of 83% in 2020 subjects, classifying the infection as hyperendemic—defined as a microfilaria prevalence of 60% or more. Notably, females (93.1%) demonstrated a significantly higher infection rate compared to males (74.5%). The prevalence of associated clinical features included leopard skin (87.5%), itching (84.16%), and nodules (75.42%), with significant statistical differences among the clinical manifestations reported. Age had a notable effect on prevalence, with the highest rates observed in individuals aged 50 years and older, while younger age groups showed lower infection rates. This consists of evidence of long-standing infections and continuous exposure to the disease vectors among the studied populations.

Conclusion

The findings from this study highlight a critical public health concern regarding the hyperendemic nature of onchocerciasis in Ovia Northeast LGA, where the current prevalence remains high despite ongoing ivermectin treatment efforts. The significant association between female gender, older age, and higher infection rates prompts the need for intensified control measures, such as better distribution and effectiveness of ivermectin treatment and further research to address possible drug resistance. Urgent action is necessary to manage this public health threat and alleviate the suffering of those affected in the region.

FAQ section (important questions/answers):

What is onchocerciasis and what causes it?

Onchocerciasis is a chronic parasitic infection caused by the filarial nematode Onchocerca volvulus. It can lead to severe skin disease and even blindness, primarily transmitted by blackflies from the Simulium damnosum complex.

What were the key findings of the study in Ovia Northeast?

The study found an alarming 83% prevalence of onchocerciasis, classifying it as hyperendemic. Females and older individuals (50 years and above) showed significantly higher infection rates, with common symptoms including leopard skin and itching.

How was the prevalence of onchocerciasis determined in the study?

Prevalence was determined through a skin-snip method in 2020 subjects. The microfilariae presence was assessed, with individuals also evaluated for clinical symptoms such as itching, nodules, and leopard skin.

What is the significance of the study's findings?

The high prevalence highlights the need for urgent control measures, including ivermectin treatment, in the affected communities. It emphasizes ongoing health risks despite past drug distributions aimed at controlling onchocerciasis.

Glossary definitions and references:

Scientific and Ayurvedic Glossary list for “Onchocerciasis Hyperendemicity in Ovia Northeast, Edo State, Nigeria”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.

1) Disease:
Onchocerciasis, caused by the nematode Onchocerca volvulus, represents a significant public health threat primarily in Africa. It manifests through various debilitating symptoms, leading to immense suffering, especially in endemic areas like Nigeria. This keyword underscores the focus of the study and highlights the disease's impact on communities within affected regions.

2) Study (Studying):
The research undertaken to assess the prevalence, endemicity, and symptomatic effects of onchocerciasis in Ovia Northeast LGA emphasizes the importance of evidence-based intervention strategies. The findings contribute to understanding the disease's severity and the necessity for public health responses, especially in areas that exhibit high infection rates.

3) Leopard:
In this context, 'leopard skin' refers to a clinical manifestation of onchocerciasis characterized by skin depigmentation. It is a significant indicator of the disease's chronic effects. The high prevalence of leopard skin in affected communities highlights the need for ongoing vigilance and treatment strategies to manage and prevent its occurrence.

4) Itching:
Itching is a common symptom experienced by individuals infected with onchocerciasis. The study reveals a high prevalence of itching in the population, indicating the disease's discomforting effects. Understanding such symptomatic presentations aids in diagnosing the disease and can inform targeted treatment protocols and community education efforts.

5) Male (Mālē):
The study found a significant correlation between gender and the prevalence of onchocerciasis, noting that females exhibited higher infection rates than males. Understanding gender disparities in disease impact is crucial for tailoring interventions and educational campaigns to effectively address the needs of differing community members in endemic regions.

6) Table:
Tables within the study present statistical data on the prevalence of clinical manifestations associated with onchocerciasis. They facilitate the clear communication of research findings, allowing readers to grasp the disease's impact quantitatively. Such organized data representation is essential for informing public health policy and intervention strategies.

7) Observation:
Observation refers to the process of clinically assessing patients for signs of onchocerciasis, including skin manifestations like nodules. It is an integral part of the study methodology, helping to establish correlations between symptomatic expressions of the disease and the overall infection rate within the surveyed population.

8) Blindness:
Blindness is a severe and worrying consequence of untreated onchocerciasis, particularly in endemic areas. The disease's potential to cause visual impairment underscores the importance of early detection and treatment. Highlighting this risk emphasizes the urgency of public health measures such as ivermectin distribution to prevent vision loss.

9) Forest:
The study region includes forested areas where the disease vector, Simulium damnosum, thrives. Such environments contribute to the transmission dynamics of onchocerciasis. Understanding the ecological context is vital for effective vector control and informing residents about the risks associated with specific environmental factors in the disease's transmission.

10) Village:
The research spans multiple villages in the Ovia Northeast LGA, highlighting the community-based nature of the study. Understanding how onchocerciasis affects different villages can help in crafting localized health interventions. It also emphasizes the importance of community participation in health programs for enhancing awareness and adherence to treatments.

11) Drug:
Ivermectin is the principal drug used for the treatment and control of onchocerciasis. The study discusses the implications of drug distribution and adherence in reducing prevalence rates. Emphasis on effective drug administration illustrates the critical role of pharmaceutical interventions in combating neglected tropical diseases like onchocerciasis.

12) Urban center (Urban centre):
Urban centres often attract residents from rural areas in search of better opportunities. This migration can influence disease dynamics, as people may move between areas of varying endemicity. Understanding migration trends is essential for public health planning, particularly regarding onchocerciasis management and treatment adherence in urban settings.

13) Accumulation (Accumulating, Accumulate):
Accumulation of microfilariae in the skin contributes to chronic skin conditions such as leopard skin. The study illustrates how prolonged exposure leads to increased parasite load, further complicating clinical outcomes. Awareness of microfilariae accumulation helps in understanding disease progression and informs strategies for effective treatment and prevention.

14) Inflammation:
Inflammation is a biological response to infection and is a significant aspect of how onchocerciasis manifests in affected individuals. Chronic inflammation due to parasitic infection can lead to severe skin and systemic complications. Recognizing inflammation's role in onchocerciasis is crucial for developing targeted therapeutic strategies.

15) Surrounding:
Surrounding communities offer a comparative perspective on how onchocerciasis prevalence varies geographically. Understanding the epidemiological context of surrounding areas helps in assessing the spread of the disease. This awareness is paramount in planning preventative measures and anticipating the potential movement of the disease across different locales.

16) Suffering:
Suffering is an underlying theme when discussing the impacts of onchocerciasis on individuals and communities. The debilitating symptoms, such as itching and skin lesions, significantly diminish quality of life. Highlighting the suffering caused by the disease rings an urgent call for public health interventions and support systems for affected populations.

17) Teaching:
Teaching involves educating communities about the risks and effects of onchocerciasis, as well as the importance of prevention and treatment. Knowledge dissemination is vital for enhancing compliance with treatment regimens. The study's findings can serve as educational resources, informing both health professionals and affected individuals about the disease.

18) Hanging:
Hanging groin is a debilitating symptom associated with chronic onchocerciasis, leading to significant morbidity. Understanding this manifestation emphasizes the severe physical repercussions of the disease and highlights the need for effective treatment strategies. It reflects the importance of addressing not just physiological impacts but also societal perceptions of affected individuals.

19) Hunting:
Hunting is a common activity in endemic regions, potentially increasing exposure to the vector responsible for onchocerciasis. The study indicates that people involved in hunting may experience higher infection rates due to increased contact with breeding sites for the disease vector. This underscores the need for targeted awareness campaigns in such activities.

20) Meeting:
Meetings with local health authorities and community leaders play a critical role in disseminating information regarding onchocerciasis. These gatherings foster collaboration between health workers and communities, enhancing engagement in health initiatives. The study emphasizes the importance of community involvement in meetings to address the impacts of onchocerciasis effectively.

21) Water:
Access to clean water sources is crucial in preventing the spread of onchocerciasis, as vectors typically breed in proximity to water. The study illustrates the importance of community education about not just the disease but also the ecological factors, such as water sources, that facilitate its transmission, fostering proactive public health measures.

22) Blood:
The study employs the skin-snip method, which involves taking a small blood-free sample to detect microfilariae, highlighting the role of bio-sampling in diagnosing onchocerciasis. Understanding the significance of blood in this context is vital for developing and refining diagnostic techniques, which are essential for effective disease management.

Other Science Concepts:

[back to top]

Discover the significance of concepts within the article: ‘Onchocerciasis Hyperendemicity in Ovia Northeast, Edo State, Nigeria’. Further sources in the context of Science might help you critically compare this page with similair documents:

Clinical feature, Statistical analysis, Sampling technique, Clinical assessment, Behavioral pattern, Clinical manifestation, Hypertension, Public health threat, Risk factor, Study area, Female gender, Logistic regression, Counterfeit drugs, Onchocerca Volvulus, High Prevalence, Chi-Squared Test, Age-related prevalence, Age risk factor, Randomised sampling, Local government area, Symptomatic effect.

Concepts being referred in other categories, contexts and sources.

Leopard skin.

Let's grow together!

I humbly request your help to keep doing what I do best: provide the world with unbiased sources, definitions and images. Your donation direclty influences the quality and quantity of knowledge, wisdom and spiritual insight the world is exposed to.

Let's make the world a better place together!

Like what you read? Help to become even better: