
Judicaël Obame-NkogheUniversité des Sciences et Techniques de Masuku | USTM · Department of Biology
Judicaël Obame-Nkoghe
PhD
VectorBiology&Infect.Dis.-Univ. Sc.&Tech. of Masuku, Gabon
AAS Afiliate-AREF Alumni
LastProject: albodrive-project.net
About
25
Publications
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Introduction
Publications
Publications (25)
Zoopharmacognosy is the study of the self-medication behaviors of non-human animals that use plant, animal or soil items as remedies. Recent studies have shown that some of the plants employed by animals may also be used for the same therapeutic purposes in humans. The aim of this study was to determine the antioxidant and antibacterial activity of...
Background
This study aimed to assess the spatial distribution of Anopheles mosquito larval habitats and the environmental factors associated with them, as a prerequisite for the implementation of larviciding.
Methods
The study was conducted in December 2021, during the transition period between the end of the short rainy season (September–Novembe...
We look at the link between climate change and vector-borne diseases in low- and middle-income countries in Africa. The large endemicity and escalating threat of diseases such as malaria and arboviral diseases, intensified by climate change, disproportionately affects vulnerable communities globally. We highlight the urgency of prioritizing researc...
Background
Since its first record in urban areas of Central-Africa in the 2000s, the invasive mosquito, Aedes albopictus, has spread throughout the region, including in remote villages in forested areas, causing outbreaks of Aedes-borne diseases, such as dengue and chikungunya. Such invasion might enhance Ae. albopictus interactions with wild anima...
In Africa, vector-borne diseases are a major public health issue, especially in cities. Urban greening is increasingly considered to promote inhabitants’ well-being. However, the impact of urban green spaces on vector risk remains poorly investigated, particularly urban forests in poor hygienic conditions. Therefore, using larval sampling and human...
In Africa, vector-borne diseases (VBDs) are still a major public health issue especially in cities that gather an increasing human population. Market gardening practices, for example, can favor the transmission of urban malaria, while insufficient water supply and waste management favor the circulation of arboviroses related to Aedes mosquitoes. Ur...
Aedes aegypti and A. albopictus mosquitoes are the main vectors for dengue virus (DENV) and other arboviruses, including Zika virus (ZIKV). Understanding the factors that affect transmission of arboviruses from mosquitoes to humans is a priority because it could inform public health and targeted interventions. Reasoning that interactions among viru...
The COVID-19 disease presents a large range of clinical manifestations and includes asymptomatic, mild, and severe cases. The level of severity is related to parameters associated with immunity, genetics, and biochemistry. Africa shows one of the lowest COVID-19 fatality rates but very few data on the biochemical markers of COVID-19 in patients and...
Since its first record in urban areas of Central-Africa in 2000s, the invasive mosquito, Aedes albopictus, has continued to spread across the region, including in remote rural areas, and promoted outbreaks of Aedes-borne diseases, such as dengue, chikungunya and Zika. From the One-Health perspective, such invasion might enhance Ae. albopictus inter...
Importance
Since the emergence of COVID-19 in central China, sub-Saharan African countries, with the exception of South Africa, have been relatively spared during the COVID-19 pandemic. Consequently, few descriptive studies from this region are available.
Objective
To describe the clinical characteristics and outcomes of patients with COVID-19 inf...
Aedes aegypti and Aedes albopictus are major mosquito vectors for arthropod-borne viruses (arboviruses) such as dengue (DENV) and Zika (ZIKV) viruses. Mosquitoes also carry insect-specific viruses (ISVs) that may affect the transmission of arboviruses. Here, we analyzed the global virome in urban Aedes mosquitoes and observed that two insect-specif...
The two main Zika virus (ZIKV) vectors, Aedes albopictus and Aedes aegypti (invasive and native species, respectively), are present in Gabon (Central Africa). The aim of this study was to determine the entomological ZIKV risk associated with these mosquito species in Gabon by evaluating their vector competence for an African (i.e. representative of...
Typhoid fever is an infectious disease that is fatal if left untreated. The most recent global data show more than 20 million cases annually, with more than 200,000 deaths. In Gabon, a study has shown that young adults are increasingly affected. Nevertheless, national data on this scourge are rare. The aim is to determine the prevalence of typhoid...
RÉSUMÉ
Objectifs : Le paludisme demeure un problème majeur de santé publique dans les zones rurales d’Afrique subsaharienne. Le but de cette étude était d’évaluer les connaissances et les méthodes de lutte antipaludique au sein des ménages de la cité minière de Moanda en zone semi-rurale au Sud-Est Gabon.
Méthodologie et Résultats : Une enquête tra...
Background and Aim: Gastrointestinal infestations caused by intestinal parasites are the most important diseases and the most common in pigs in the tropics. These parasites are often associated with a huge economic loss. This study aimed to assess the diversity and prevalence of gastrointestinal parasites in farmed pigs from Haut-Ogooue Province, i...
Caves house pathogenic microorganisms, some of which are transmitted by blood-sucking arthropods. In Africa, previous studies identified mosquitoes, sand flies and biting midges as the main potential vectors of cave-dwelling pathogens. However, to understand their involvement in pathogen spillover, it is crucial to characterize their diversity, com...
The progressive anthropization of caves for food resources or economic purposes increases human exposure to pathogens that naturally infect cave-dwelling animals. The presence of wild or domestic animals in the immediate surroundings of caves also may contribute to increasing the risk of emergence of such pathogens. Some zoonotic pathogens are tran...
About 60% of emerging infectious diseases in humans are of zoonotic origin. Their increasing number requires the development of new methods for early detection and monitoring of infectious agents in wildlife. Here, we investigated whether blood meals from hematophagous flies could be used to identify the infectious agents circulating in wild verteb...
L’empreinte écologique de l’homme sur les milieux naturels forestiers d’Afrique centrale n’a cessé de s’accroître au cours des dernières décennies, et rares sont les écosystèmes qui ne sont pas exploités. Ainsi, même des milieux a priori hostiles comme les grottes constituent des ressources répondant aux besoins primaires des populations environnan...
Background
The genus Spelaeomyia includes four African species considered as being cavernicolous: Spelaeomyia darlingi, Spelaeomyia mirabilis, Spelaeomyia emilii and Spelaeomyia moucheti. Despite a potential role in Leishmania major leishmaniasis transmission in Mali, no molecular studies and only few morphological studies have addressed relationsh...
Background:
Evidence of haemosporidian infections in bats and bat flies has motivated a growing interest in characterizing their transmission cycles. In Gabon (Central Africa), many caves house massive colonies of bats that are known hosts of Polychromophilus Dionisi parasites, presumably transmitted by blood-sucking bat flies. However, the role o...
Bats are known to harbor multiple paramyxoviruses. Despite the creation of two new genera, Aquaparamyxovirus and Ferlavirus, to accommodate this increasing diversity, several recently isolated or characterized viruses remain unclassified beyond the subfamily level. In the present study, among 985 bats belonging to 6 species sampled in the Belinga c...
The γ-proteobacterium Arsenophonus and its close relatives (Arsenophonus and like organisms, ALOs) are emerging as a novel clade of endosymbionts, which are exceptionally widespread in insects. The biology of ALOs is, however, in most cases entirely unknown, and it is unclear how these endosymbionts spread across insect populations. Here, we invest...