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West Africa

Yuxiao Wang, Jingxin Li, Yuemei Hu, Qi Liang, Mingwei Wei, Fengcai Zhu
Ebola virus disease (EVD) has become a great threat to humans across the world in recent years. The 2014 Ebola epidemic in West Africa caused numerous deaths and attracted worldwide attentions. Since no specific drugs and treatments against EVD was available, vaccination was considered as the most promising and effective method of controlling this epidemic. So far, 7 vaccine candidates had been developed and evaluated through clinical trials. Among them, the recombinant vesicular stomatitis virus-based vaccine (rVSV-EBOV) is the most promising candidate, which demonstrated a significant protection against EVD in phase III clinical trial...
October 20, 2016: Human Vaccines & Immunotherapeutics
Essowè Palanga, Denis Filloux, Darren P Martin, Emmanuel Fernandez, Daniel Gargani, Romain Ferdinand, Jean Zabré, Zakaria Bouda, James Bouma Neya, Mahamadou Sawadogo, Oumar Traore, Michel Peterschmitt, Philippe Roumagnac
Cowpea, (Vigna unguiculata L. (Walp)) is an annual tropical grain legume. Often referred to as "poor man's meat", cowpea is one of the most important subsistence legumes cultivated in West Africa due to the high protein content of its seeds. However, African cowpea production can be seriously constrained by viral diseases that reduce yields. While twelve cowpea-infecting viruses have been reported from Africa, only three of these have so-far been reported from Burkina Faso. Here we use a virion-associated nucleic acids (VANA)-based metagenomics method to screen for the presence of cowpea viruses from plants collected from the three agro-climatic zones of Burkina Faso...
2016: PloS One
Leyla Ismayilova, Eleni Gaveras, Austin Blum, Alexice Tô-Camier, Rachel Nanema
OBJECTIVES: Research about the mental health of children in Francophone West Africa is scarce. This paper examines the relationships between adverse childhood experiences, including exposure to violence and exploitation, and mental health outcomes among children living in ultra-poverty in rural Burkina Faso. METHODS: This paper utilizes baseline data collected from 360 children ages 10-15 and 360 of their mothers recruited from twelve impoverished villages in the Nord Region of Burkina, located near the Sahel Desert and affected by extreme food insecurity...
2016: PloS One
Martina R Laidemitt, Eva T Zawadzki, Sara V Brant, Martin W Mutuku, Gerald M Mkoji, Eric S Loker
Paramphistomoids are ubiquitous and widespread digeneans that infect a diverse range of definitive hosts, being particularly speciose in ruminants. We collected adult worms from cattle, goats and sheep from slaughterhouses, and cercariae from freshwater snails from ten localities in Central and West Kenya. We sequenced cox1 (690 bp) and internal transcribed region 2 (ITS2) (385 bp) genes from a small piece of 79 different adult worms and stained and mounted the remaining worm bodies for comparisons with available descriptions...
October 20, 2016: Parasitology
Luís Catarino, Philip J Havik, Bucar Indjai, Maria M Romeiras
This dataset presents an annotated list of medicinal plants used by local communities in Guinea-Bissau (West Africa), in a total of 218 species. Data was gathered by means of herbarium and bibliographic research, as well as fieldwork. Biological and ecological information is provided for each species, including in-country distribution, geographical range, growth form and main vegetation types. The dataset was used to prepare a paper on the medicinal plants of Guinea-Bissau "Medicinal plants of Guinea-Bissau: therapeutic applications, ethnic diversity and knowledge transfer" (Catarino et al...
June 2016: Data in Brief
Julie Yamaguchi, Catherine A Brennan, Elodie Alessandri, Jean-Christophe Plantier, Gavin Cloherty, Michael G Berg
HIV-2 exhibits a natural history of infection distinct from HIV-1. Primarily found in West Africa and in only 10-20% of HIV infections in this region, patients with HIV-2 typically exhibit a slower progression to AIDS, lower viral loads, and decreased rates of transmission. Here we used next-generation sequencing (NGS) to determine the sequence and phylogenetic classification of 9 HIV-2 genomes. We identified a patient with a series of mutations in an invariant cytotoxic lymphocyte (CTL)-restricted gag epitope required for retroviral structure and replication, and implicated in long-term non-progression to AIDS...
October 19, 2016: AIDS Research and Human Retroviruses
Qanta A Ahmed, Ziad A Memish
Hajj is among the world's largest mass gatherings, drawing between 2 and 3.5 million Muslims from 183 nations annually to perform pilgrimage in Mecca, Saudi Arabia. Infectious disease outbreaks can be imported both into the Hajj population and exported internationally by returning pilgrims. The domestic Saudi population can also be at risk of outbreaks traveling amid this mass migration. With yellow fever reported for the first time in China following the infection of expatriate Chinese workers in Angola and a full blown outbreak underway in wider West Africa, the prospect of yellow fever outbreaks in Asia threatens to impact Saudi Arabia, both during and beyond the Hajj season...
October 17, 2016: Frontiers of Medicine
Taiye Remi Fasola, Blessing Ukwenya, Ademola Adetokunbo Oyagbemi, Temidayo Olutayo Omobowale, Temitayo Olabisi Ajibade
BACKGROUND: Croton lobatus contains a high amount of antioxidant phytochemicals that probably account for its wide use as food and medicine in the traditional communities of West Africa. METHODS: The study evaluated the modulatory role of methanol extract of Croton lobatus leaf on alloxan-induced diabetes and associated cardiovascular complications. Male rats were randomly selected and assigned to one of six groups (A to F) of eight animals each: A (distilled water); B (corn oil); C (Alloxan); D (Alloxan + 100 mg kg-1 Croton lobatus); E: (Alloxan + 200 mg kg-1 C...
September 2016: Journal of Intercultural Ethnopharmacology
Thespina Yamanis, Elisabeth Nolan, Susan Shepler
BACKGROUND: Future infectious disease epidemics are likely to disproportionately affect countries with weak health systems, exacerbating global vulnerability. To decrease the severity of epidemics in these settings, lessons can be drawn from the Ebola outbreak in West Africa. There is a dearth of literature on public perceptions of the public health response system that required citizens to report and treat Ebola cases. Epidemiological reports suggested that there were delays in diagnosis and treatment...
October 2016: PLoS Neglected Tropical Diseases
Solomon Kadiri
Hypertension prevalence rates in most urbanized areas of Africa range from 20-30%, with a recent systematic review reporting 16.2% for sub-Saharan Africa. These rates are lower than those in the West but the age standardized rates are higher than in other regions of the world. The attendant morbidity and mortality are disproportionately high. For example, failure of nocturnal dipping and microalbuminuria, predictive of vascular disease, occur relatively early in the course of hypertension and predispose to early vascular disease...
September 2016: Journal of Hypertension
Laurene Boateng, Richard Ansong, William B Owusu, Matilda Steiner-Asiedu
: Coconut and palm oils which were the major sources of dietary fats for centuries in most of West Africa have been branded as unhealthy highly saturated fats. Their consumption has been peddled to supposedly raise the level of blood cholesterol, thereby increasing the risk of coronary heart disease. This adverse view has led to a reduction in their consumption in West Africa and they have been substituted for imported vegetable oils. Recent information however, indicates some beneficial effects of these oils particularly their roles in nutrition, health and national development...
September 2016: Ghana Medical Journal
Nídia Cangi, Jonathan L Gordon, Laure Bournez, Valérie Pinarello, Rosalie Aprelon, Karine Huber, Thierry Lefrançois, Luís Neves, Damien F Meyer, Nathalie Vachiéry
The disease, Heartwater, caused by the Anaplasmataceae E. ruminantium, represents a major problem for tropical livestock and wild ruminants. Up to now, no effective vaccine has been available due to a limited cross protection of vaccinal strains on field strains and a high genetic diversity of Ehrlichia ruminantium within geographical locations. To address this issue, we inferred the genetic diversity and population structure of 194 E. ruminantium isolates circulating worldwide using Multilocus Sequence Typing based on lipA, lipB, secY, sodB, and sucA genes...
2016: Frontiers in Cellular and Infection Microbiology
Barakat Adeola Animasahun, Akpoembele D Madise-Wobo, Bode A Falase, Samuel I Omokhodion
BACKGROUND: There are only very few reports on Fallot's tetralogy in Africa especially from sub-Saharan Africa. At best tetralogy of Fallot (TOF) is only mentioned as part of reports of surveys of other congenital heart diseases or as case reports in the region. There has been no report on cohorts of children with TOF in West Africa. This article describes the pattern and presentation of children diagnosed with TOF patients in a tertiary hospital in sub-Saharan Africa over a 9-year period...
October 2016: Cardiovascular Diagnosis and Therapy
Nathan D Grubaugh, Kristian G Andersen
The epidemics of Ebola virus in West Africa and Zika virus in America highlight how viruses can explosively emerge into new territories. These epidemics also exposed how unprepared we are to handle infectious disease emergencies. This is also true when we consider hypothesized new clinical features of infection, such as the associations between Zika virus infection and severe neurological disease, including microcephaly and Guillain-Barré syndrome. On the surface, these pathologies appear to be new features of Zika virus infection, however, causal relationships have not yet been established...
2016: F1000Research
Alexandre Hassanin, Nicolas Nesi, Julie Marin, Blaise Kadjo, Xavier Pourrut, Éric Leroy, Guy-Crispin Gembu, Prescott Musaba Akawa, Carine Ngoagouni, Emmanuel Nakouné, Manuel Ruedi, Didier Tshikung, Célestin Pongombo Shongo, Céline Bonillo
Both Ebolavirus and Marburgvirus were detected in several fruit bat species of the family Pteropodidae, suggesting that this taxon plays a key role in the life cycle of filoviruses. After four decades of Zaire Ebolavirus (ZEBOV) outbreaks in Central Africa, the virus was detected for the first time in West Africa in 2014. To better understand the role of fruit bats as potential reservoirs and circulating hosts between Central and West Africa, we examine here the phylogeny and comparative phylogeography of Pteropodidae...
October 13, 2016: Comptes Rendus Biologies
Maud Gits-Muselli, Mazouz Benderdouche, Samia Hamane, Anselme Mingui, Martine Feuilhade de Chauvin, Nicolas Guigue, Marie-Quitterie Picat, Emmanuelle Bourrat, Antoine Petit, Martine Bagot, Alexandre Alanio, Stéphane Bretagne
Tinea capitis (TC) is a highly contagious fungal infection of the scalp due to dermatophytes in children. To obtain information on the epidemiology of TC in the urban area of Paris, we analysed the microbiological results of 3090 patients seen with suspected TC from October 2010 to September 2015 at Saint Louis hospital, Paris, France. A peak of TC was observed in 3-6 year-old children, followed by a progressive decrease until 16 years of age. Of the 1311 positive cultures, 95% (1246) yielded one of the three anthropophilic species [Trichophyton tonsurans (33...
October 14, 2016: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
James M Shultz, Janice L Cooper, Florence Baingana, Maria A Oquendo, Zelde Espinel, Benjamin M Althouse, Louis Herns Marcelin, Sherry Towers, Maria Espinola, Clyde B McCoy, Laurie Mazurik, Milton L Wainberg, Yuval Neria, Andreas Rechkemmer
The 2013-2016 West Africa Ebola virus disease pandemic was the largest, longest, deadliest, and most geographically expansive outbreak in the 40-year interval since Ebola was first identified. Fear-related behaviors played an important role in shaping the outbreak. Fear-related behaviors are defined as "individual or collective behaviors and actions initiated in response to fear reactions that are triggered by a perceived threat or actual exposure to a potentially traumatizing event. FRBs modify the future risk of harm...
November 2016: Current Psychiatry Reports
J M van Rooyen, M Poglitsch, H W Huisman, Cmc Mels, R Kruger, L Malan, S Botha, L Lammertyn, L Gafane, A E Schutte
OBJECTIVE: The objective of this study was to make use of a quantitative and qualitative approach comparing the systemic renin-angiotensin system (RAS) of hypertensive black and white African men by using RAS equilibrium analysis. MATERIALS AND METHODS: This sub-study involved 23 black (n = 15) and white (n = 8) hypertensive men aged 39.5-41 years, living in the North West Province of South Africa. The RAS-Fingerprinting was determined with LC-MS/MS quantification of angiotensin peptides...
October 2016: Journal of the Renin-angiotensin-aldosterone System: JRAAS
Edward C Holmes, Gytis Dudas, Andrew Rambaut, Kristian G Andersen
The 2013-2016 epidemic of Ebola virus disease in West Africa was of unprecedented magnitude and changed our perspective on this lethal but sporadically emerging virus. This outbreak also marked the beginning of large-scale real-time molecular epidemiology. Here, we show how evolutionary analyses of Ebola virus genome sequences provided key insights into virus origins, evolution and spread during the epidemic. We provide basic scientists, epidemiologists, medical practitioners and other outbreak responders with an enhanced understanding of the utility and limitations of pathogen genomic sequencing...
October 12, 2016: Nature
(no author information available yet)
Background Data from studies in nonhuman primates suggest that the triple monoclonal antibody cocktail ZMapp is a promising immune-based treatment for Ebola virus disease (EVD). Methods Beginning in March 2015, we conducted a randomized, controlled trial of ZMapp plus the current standard of care as compared with the current standard of care alone in patients with EVD that was diagnosed in West Africa by polymerase-chain-reaction (PCR) assay. Eligible patients of any age were randomly assigned in a 1:1 ratio to receive either the current standard of care or the current standard of care plus three intravenous infusions of ZMapp (50 mg per kilogram of body weight, administered every third day)...
October 13, 2016: New England Journal of Medicine
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