Article
Parasitology
Adam Hendy, Meryam Krit, Kenneth Pfarr, Christine Laemmer, Jacobus De Witte, Philippe Nwane, Joseph Kamgno, Hugues C. Nana-Djeunga, Michel Boussinesq, Jean-Claude Dujardin, Rory Post, Robert Colebunders, Sarah O'Neill, Peter Enyong, Alfred K. Njamnshi
Summary: The study found high densities of biting black flies sustaining transmission of O. volvulus along the lower Mbam river, despite relatively low infection rates that do not meet the WHO threshold for interruption of transmission.
PARASITES & VECTORS
(2021)
Article
Public, Environmental & Occupational Health
Armelle Forrer, Samuel Wanji, Elisabeth Dibando Obie, Theobald Mue Nji, Louise Hamill, Kim Ozano, Helen Piotrowski, Laura Dean, Abdel J. Njouendou, Relindis Ekanya, Winston Patrick Chounna Ndongmo, Ebua Gallus Fung, Dum-Buo Nnamdi, Raphael A. Abong, Amuam Andrew Beng, Mathias Esum Eyong, Bertrand L. Ndzeshang, Desmond Akumtoh Nkimbeng, Samuel Teghen, Anicetus Suireng, Ernerstine Ebot Ashu, Emmanuel Kah, Michele M. Murdoch, Rachael Thomson, Sally Theobald, Peter Enyong, Joseph D. Turner, Mark J. Taylor
Summary: The study in South-West Cameroon found that despite over 15 years of community-directed treatment with ivermectin (CDTI), onchocerciasis infection levels remain high, possibly due to low participation and fear of adverse events. The research also revealed that adherence to CDTI is influenced by individuals' perception of health benefits and fear of adverse events.
Article
Behavioral Sciences
Leonard Ngarka, Joseph Nelson Siewe Fodjo, Calson Ambomatei, Wepnyu Yembe Njamnshi, Julius Ndi Taryunyu Njamnshi, Leonard N. Nfor, Michel K. Mengnjo, Alfred K. Njamnshi
Summary: The epidemiology of epilepsy in onchocerciasis-endemic villages in Cameroon was documented, and its relation to onchocerciasis prevalence was investigated. The study found a high prevalence of epilepsy associated with onchocerciasis. Therefore, more effective elimination measures are urgently needed in these endemic areas to reduce the burden of onchocerciasis-associated epilepsy.
EPILEPSY & BEHAVIOR
(2023)
Article
Behavioral Sciences
Samuel A. Angwafor, Gail S. Bell, Leonard Ngarka, Willem M. Otte, Earnest N. Tabah, Leonard N. Nfor, Theophilus N. Njamnshi, Josemir W. Sander, Alfred K. Njamnshi
Summary: The study in a rural district of Cameroon found that focal-onset seizures were common among epilepsy patients, indicating potential acquired causes like neurocysticercosis and onchocerciasis. The high treatment gap and prevalence of status epilepticus and epilepsy-related injuries emphasize the significant burden of epilepsy in this region.
EPILEPSY & BEHAVIOR
(2021)
Article
Public, Environmental & Occupational Health
Laurentine Sumo, Ngum H. Ntonifor, Cedric G. Lenou-Nanga, Nicanor Chenkumo-Kengmoni, Vanessa T. Amana-Bokagne, Chembo G. Awah, Yannick Niamsi-Emalio, Hugues C. Nana-Djeunga
Summary: The study identified poor knowledge and misconceptions among residents of the Mbengwi health district in Cameroon regarding neglected tropical diseases, which can impact their adherence to preventive chemotherapy programs. Strengthening information, education, and communication efforts is crucial for improving community participation.
JOURNAL OF EPIDEMIOLOGY AND GLOBAL HEALTH
(2021)
Article
Parasitology
Joseph Nelson Siewe Fodjo, Leonard Ngarka, Wepnyu Yembe Njamnshi, Peter Ayuk Enyong, Anne-Cecile Zoung-Kanyi Bissek, Alfred Kongnyu Njamnshi
Summary: This study investigated the onchocerciasis situation in the Ntui Health District in Cameroon, revealing high biting rates but low black fly infection rates, with a higher prevalence in epilepsy patients. It also found evidence of ongoing O. volvulus infection endemicity in these communities.
PARASITES & VECTORS
(2022)
Article
Entomology
Andre Domche, Philippe B. Nwane, Hugues C. Nana Djeunga, Guy R. Njitchouang, Sebastien D. Pion, Michel Boussinesq, Flobert Njiokou, Joseph Kamgno
Summary: This study investigated the entomological indicators of onchocerciasis transmission and the impact of climatic variables on vector population dynamics. Despite more than two decades of mass drug administration, transmission of onchocerciasis is still ongoing in the study area. Control measures should be implemented during the long dry season to interrupt transmission.
JOURNAL OF MEDICAL ENTOMOLOGY
(2022)
Article
Microbiology
Arnauld Efon Ekangouo, Hugues C. Nana Djeunga, Guilhem Sempere, Joseph Kamgno, Flobert Njiokou, Paul Moundipa Fewou, Anne Geiger
Summary: This study explores the potential of blackfly bacteriome as a novel approach for controlling onchocerciasis by investigating its composition and variability in the presence of Onchocerca volvulus infection. The results suggest a causal relationship between the bacteriome composition and the onset of blackflies' infection by O. volvulus.
Article
Parasitology
Andre Domche, Hugues C. Nana-Djeunga, Linda Djune Yemeli, Cedric Lenou Nanga, Michel Boussinesq, Flobert Njiokou, Sebastien Pion, Joseph Kamgno
Summary: Despite a high density of black flies in persisting onchocerciasis foci in Cameroon, no vector control has been carried out to complement Community-Directed Treatment with Ivermectin (CDTI). This study revealed that residents have a certain level of understanding of onchocerciasis, black fly nuisance, and ecological knowledge, but lack knowledge on transmission modes and vector ecology. Implementing community-based vector control is necessary to support CDTI and reduce black fly nuisance.
PARASITES & VECTORS
(2021)
Article
Public, Environmental & Occupational Health
Obiora A. Eneanya, Lincoln Gankpala, Charles W. Goss, Fatorma K. Bolay, Gary J. Weil, Peter U. Fischer
Summary: A study in Liberia compared the impact of annual and semiannual mass drug administration (MDA) on helminthic infections. The results showed that both annual and semiannual MDA were equally effective in reducing LF and soil-transmitted helminth infection parameters over a 3-year period.
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
(2022)
Article
Behavioral Sciences
Arnauld Efon-Ekangouo, Hugues C. Nana-Djeunga, Philippe Nwane, Elvis Lisongue-Tonga, Andre Domche, Laurentine Sumo, Mike Yaw Osei-Atweneboana, Anne Geiger, Joseph Kamgno
Summary: This study assessed the prevalence of epilepsy in an onchocerciasis endemic area under long-term preventive chemotherapy. The results showed a significant impact of chemotherapy on the prevalence of epilepsy, with a decreasing trend in epilepsy incidence.
EPILEPSY & BEHAVIOR
(2022)
Article
Parasitology
Kiswendsida Thierry Guiguemde, Patindoilba Marcel Sawadogo, Adama Zida, Apollinaire Kima, Roland Windtare Bougma, Mamadou Serme, Ibrahim Sangare, Clarisse Bougouma, Sanata Bamba
Summary: This study assessed the transmission of onchocerciasis in the Cascades region of Burkina Faso and found that the resumption of ivermectin treatment has significantly reduced the prevalence of the disease since 2011.
PARASITOLOGY INTERNATIONAL
(2024)
Article
Parasitology
Cabirou Mounchili Shintouo, Robert Adamu Shey, Bernis Neneyoh Yengo, Ntang Emmaculate Yaah, Rene Ning Teh, Roland Akwelle Ngwese, Lawrence Ayong, Luc Vanhamme, Jacob Souopgui, Stephen Mbigha Ghogomu, Rose Njemini
Summary: This study aimed to evaluate the effects of COVID-19 pandemic on the implementation activities against onchocerciasis in two health districts in Cameroon. The results showed that elderly individuals bear the largest burden of onchocerciasis in both districts.
Article
Clinical Neurology
Alexandre Morin, Maxime Guillaume, Leonard Ngarka, Godwin Y. Tatah, Joseph Nelson Siewe Fodjo, Guillaume Wyart, Ghislain Nokam, Thierry Tchoumi, Mary Bello Nkinin, Wepnyu Y. Njamnshi, Eric-Samuel Chokote, Michel Boussinesq, Robert Colebunders, Cedric B. Chesnais, Gilles Gargala, Dominique Parain, Alfred K. Njamnshi
Summary: Among patients with epilepsy in the Sanaga-Mbam area of Cameroon, similar EEG patterns were observed compared to onchocerciasis patients, with most patients presenting severe cognitive impairment.
Article
Mathematics, Interdisciplinary Applications
Tchule Nguiwa, Gabriel Guilsou Kolaye, Mibaile Justin, Djaouda Moussa, Gambo Betchewe, Alidou Mohamadou
Summary: The study investigates a mathematical fractional-order cholera model, deriving the basic reproduction number and stability conditions of equilibrium points, emphasizing the importance of vaccination in controlling the spread of cholera.
CHAOS SOLITONS & FRACTALS
(2021)