Buruli Ulcer in South Western Nigeria: A Retrospective Cohort Study of Patients Treated in Benin

Nigeria is known to be endemic to Buruli ulcer, but epidemiological data are remarkably rare. Here, we present a large cohort of 127 PCR-confirmed M. ulcerans infection patients coming from Nigeria and treated in a neighbouring country, Benin. Severe lesions and delay of consultation are factors that should encourage establishment of a treatment centre in South Western Nigeria.     

Influences of mother's work,childhood place of residence,and exposure to media on breast-feeding patterns: experience of Nigeria and Uganda

This study uses data from the Nigerian Demographic and Health Survey collected in 1990 and the Ugandan Demographic and Health Survey collected in 1995 to examine the implications of mother's work, childhood place of residence, and exposure to the media for breast-feeding patterns (exclusivity and intensity) in Nigeria and Uganda. Nigeria and Uganda present an interesting contrast because Nigeria is more modernized and economically developed than Uganda, thus providing a good indication of the influence of modernization on breast-feeding patterns. Mother's work status is defined by considering whether mothers earned cash from work and took their children to work, hence emphasizing the compatibility of work with child care. Work least compatible with child care had a negative effect on breast-feeding intensity in Nigeria. The negative effect of mother's work on exclusive breast-feeding (that is, if the mothers used formula or milk instead) observed for some working mothers in Nigeria and Uganda was partly confounded by urban residence, exposure to media, and other socioeconomic factors. Mother's work did not have a negative effect on breast-feeding intensity in Uganda. The relationship between mother's work, urban residence, media exposure, and breast-feeding practice seems to be stronger in Nigeria than Uganda.     

A review of Mangocellus (Heteroptera: Miridae) with five new species from West Africa

Abstract. The isometopine genus, Magnocellus Smith is reviewed. Two species-groups are recognized and keys to the eleven included species are provided. Five new species are described: slaten (Ghana), confusus (Nigeria), tibialis (Nigeria and Ghana), deeming (Nigeria) and fulvus (Nigeria). Three species, ghanaiensis Smith, scutellaris Linnavuori and wacriensis Smith, are redescribed.     

Incidence of trypanosomes in settled Fulani cattle in the Anambra State, southern Nigeria

The incidence of trypanosomes in Fulani Zebu cattle settled in the Anambra State in southern Nigeria for at least three continuous years was found significantly higher than incidence in northern Nigeria. Despite this situation the cattle in the Anambra State were reported to show better reproductive performance, generally looked healthier and more robust than cattle in northern Nigeria. Presence of tsetse flies or trypanosomes per se appears not to constitute a complete hindrance to cattle production in a given zone. The result was discussed.     

Citizenship and Resource Competition in Nigeria

This article discusses the growing tension between constitutionally defined citizenship and socially accepted practices of “we–they dichotomies” as a turbulent component of the national question discourse in Nigeria. It examines the adoption of dual citizenship across the country as well as how this generates violent ethnic conflict. Importantly, while citizenship refers to one’s full membership of a sovereign political community acquired either by birth, naturalisation or any other process legitimised and recognised by the supreme law of the state, indigeneship, on the other hand, is a discriminatory policy employed by local or provincial governments for protecting the rights of their so–called indigenous populations to employment, political power and other resources of the regions or states against domination by alien populations and outsiders. It is argued that while such distinctions have been made possible inter alia by Nigeria’s multi–ethnic character, the ensuing struggles and tensions have been driven by the normless competition over resource allocation. These have especially been the case in instances where ethno–territorial cleavages have been the primary beneficiaries and targets of such resource allocation. This article discusses land as a major economic resource over which heated ethnic conflicts have taken place in Nigeria. Drawing on the conflicts between Hausa–Fulani pastoralists and Yoruba farmers in South–Western Nigeria, it examines the question of how disputed access to land and water has underlain an almost permanent basis of conflict in Nigeria as well as their implications for the country’s fledgling democracy. How does the struggle over land affect the articulation of the citizenship question in Nigeria? How have scarcity and competition over resources affected the contest over citizenship and the forging of nationhood among natives and settlers in South–Western Nigeria? How have colonial framings of socially accepted practices of indigeneship entrenched an understanding of the state in Nigeria as a representation of permanently defined subnational conceptions of ethnic citizenship? What role can the state in Nigeria play towards transforming the multiplicities of traditional societies into coherent political societies as a basis for (i) eliciting deference and devotion from the individual to the claims of the state, and ultimately for (ii) increasing cultural homogeneity, political integration and value consensus? Drawing on data generated from an ethnographic study carried out in South–Western Nigeria between October 2009 and March 2015, this study interrogates these questions.     

Dual phylogenetic origins of Nigerian lions (Panthera leo)

Lion fecal DNA extracts from four individuals each from Yankari Game Reserve and Kainji‐Lake National Park (central northeast and west Nigeria, respectively) were Sanger‐sequenced for the mitochondrial cytochrome b gene. The sequences were aligned against 61 lion reference sequences from other parts of Africa and India. The sequence data were analyzed further for the construction of phylogenetic trees using the maximum‐likelihood approach to depict phylogenetic patterns of distribution among sequences. Our results show that Nigerian lions grouped together with lions from West and Central Africa. At the smaller geographical scale, lions from Kainji‐Lake National Park in western Nigeria grouped with lions from Benin (located west of Nigeria), whereas lions from Yankari Game Reserve in central northeastern Nigeria grouped with the lion populations in Cameroon (located east of Nigeria). The finding that the two remaining lion populations in Nigeria have different phylogenetic origins is an important aspect to consider in future decisions regarding management and conservation of rapidly shrinking lion populations in West Africa.     

Distribution of waterfowl in the wetland of Northern Nigeria

Agbelusi, E.A. & Afolayan, T.A. 2000. Distribution of waterfowl in the wetland of Northern Nigeria. Ostrich 71 (1 & 2): 73.

Nigeria with a land area of 923 850 km² has approximately 24 000 km² of wetland. These wetlands are scattered all over the country and include the man-made lakes. The wetlands of northern Nigeria are important breeding sites for Afrotropical duck and also serve as the winter refuge for Palearctic birds from Europe. About 13 sites have been identified as the actual habitat and concentration points for waterfowl in the wetlands of northern Nigeria. Among these areas, the Hadeija-Nguru wetland represents one of the most productive and ecologically significant wetlands in Nigeria. This area supports about 58 000 waterbirds, belonging to about 376 species, which consist mostly of Palearctic and Afrotropical migratory birds. Some of the important bird species that are associated with the wetland of northern Nigeria are Black Crowned Crane, Pintail, White Pelican, White-faced Tree Duck, Knob-billed Goose, Spur-winged Goose, Gull-billed Tern and Saddle-billed Stork. The paper also discusses the management implications for waterfowl conservation and tourism in Nigeria.     

Has Wild Poliovirus Been Eliminated from Nigeria?

Wild poliovirus type 3 (WPV3) has not been seen anywhere since the last case of WPV3-associated paralysis in Nigeria in November 2012. At the time of writing, the most recent case of wild poliovirus type 1 (WPV1) in Nigeria occurred in July 2014, and WPV1 has not been seen in Africa since a case in Somalia in August 2014. No cases associated with circulating vaccine-derived type 2 poliovirus (cVDPV2) have been detected in Nigeria since November 2014. Has WPV1 been eliminated from Africa? Has WPV3 been eradicated globally? Has Nigeria interrupted cVDPV2 transmission? These questions are difficult because polio surveillance is based on paralysis and paralysis only occurs in a small fraction of infections. This report provides estimates for the probabilities of poliovirus elimination in Nigeria given available data as of March 31, 2015. It is based on a model of disease transmission that is built from historical polio incidence rates and is designed to represent the uncertainties in transmission dynamics and poliovirus detection that are fundamental to interpreting long time periods without cases. The model estimates that, as of March 31, 2015, the probability of WPV1 elimination in Nigeria is 84%, and that if WPV1 has not been eliminated, a new case will be detected with 99% probability by the end of 2015. The probability of WPV3 elimination (and thus global eradication) is > 99%. However, it is unlikely that the ongoing transmission of cVDPV2 has been interrupted; the probability of cVDPV2 elimination rises to 83% if no new cases are detected by April 2016.     

Debating Ethics in HIV Research: Gaps between Policy and Practice in Nigeria

HIV prevention is a critical health issue in Nigeria; a country that has one of the worst HIV epidemic profiles in the world. With 270,000 new infections in 2012, Nigeria is a prime site for HIV prevention research. One effect of the HIV epidemic has been to revolutionalise ethical norms for the conduct of research: it is now considered unethical to design and implement HIV related studies without community engagement. Unfortunately, there is very little commensurate effort in building the capacity of local persons to engage actively with researchers, and there is no existing platform to facilitate dialogue between researchers and communities engaged in research in Nigeria. In an effort to address this gap, we undertook a series of three community dialogues (Phase One) and two community‐researcher interface meetings (Phase Two) in Nigeria. This paper aims to give an empirical account of the dialogue from these community engagement processes and provide a resulting critique of the implementation of research ethics practices in Nigeria. It is anticipated that the outputs will: (i) support researchers in designing community‐based research protocols; (ii) inform ethics committees of key considerations during research protocol reviews from a community perspective; and (iii) inform policy makers and research sponsors about issues of primary concern to communities with respect to HIV research.     

Molecular Variability and Distribution of Cassava Mosaic Begomoviruses in Nigeria

Several begomovirus species and strains causing Cassava mosaic disease (CMD) have been reported from cassava in Africa. In Nigeria, African cassava mosaic virus (ACMV) was the predominant virus in this important crop, and East African cassava mosaic virus (EACMV), first reported from eastern Nigeria in 1999, was also found occasionally. A survey was conducted in 2002 to resolve the diversity of the virus types present in cassava in Nigeria and to further understand the increasing complexity of the viruses contributing to CMD. A total of 234 leaf samples from cassava with conspicuous CMD symptoms were collected in farmers’ fields across different agroecological zones of Nigeria and subjected to polymerase chain reaction (PCR) with type‐specific primers. In addition and, to provide a full characterization of the viruses present, DNA‐A genome components of several viruses and informative genome fragments were sequenced. In Nigeria, ACMV proved to be the dominant virus with 80% of all samples being positive for ACMV. The East African cassava mosaic Cameroon virus (EACMCV) prevalent in Cameroon and Ivory Coast was detected in single infections (2%) and in mixed infections (18%) with ACMV. There was no indication for other virus strains of EACMV present in the country. The EACMCV samples collected showed a high nucleotide sequence identity >98% and resembled the described sequence of a Cameroon isolate (EACMCV‐CM) more than an Ivory Coast isolate, EACMCV‐CM[CI]. Evidence is provided that the EACMCV has reached epidemiological significance in Nigeria.     

Researching ethnic conflicts in Nigeria: the missing link

The renewed upsurge in ethnic and communal conflicts in Nigeria has generated increased interests in ethnic conflicts studies. A dominant approach in the literature is the concentration on the study of inter-ethnic conflicts at the expense of intra-ethnic conflicts. However, experiences have shown that intra-ethnic conflicts are as equally preponderant and bloody as inter-ethnic conflicts, suggesting that considerable research attention be directed at them. This paper sheds light on the perseverance of sub-ethnic identities and conflicts in Nigeria. It traces the evolution of ethnic conflict research in Nigeria, explores the existing literature on ethnic conflicts and points to the neglect of intra-ethnic conflicts. The consequence, the paper concludes, is that knowledge of ethnic conflicts in Nigeria is likely to be insufficient and undeveloped.     

PALAEARCTIC MIGRANTS IN NIGERIA

An account is given of the topography, climate and vegetation belts of Nigeria to illuminate the ecology of the Palaearctic migrants to the country. The faunistic relationship of the resident and migrant avifauna is considered and it is shown that approximately one species in six is migrant. It is shown that the more arid vegetation belts support the largest numbers of migrant species, the forest belt supporting only very few species. Some species appear to overfly the most northern areas. Rather few observations of visual migration are available but those known are recorded. A summary of ringing recoveries affecting Nigeria is given and it is shown that there is clear evidence of species returning to the same wintering grounds each year. The status of 135 migrant species is briefly treated and other species are mentioned where negative information is valuable. Calandrella rufescens, Cyanosylvia svecica, and Emberiza hortulana, notmentioned by Bannerman (1930-53) are included and Cettia cetti is recorded from West Africa for the first time. Several species have had their range extended to include Nigeria. A comparison of breeding areas with the Mediterranean/Sahara crossing zones and Nigerian occurrences shows that most terrestrial species in Nigeria move fairly closely to the lines of longitude. Many aquatics, mostly herons and ducks, breed much to the east of the longitude of Nigeria. It is suggested that the unexpected number of Palaearctic migrants which winter in the arid north of Nigeria indicates that food is less scarce than the appearance of the country in the late dry season indicates. There is a great need for an ornithological and ecological research station in Nigeria in an area such as southwest Lake Chad.     

Incidence of occupational stress among medical radiographers: A population based zonal survey.

Biomechanical and Psychosocial stresses are capable of destabilizing any health care professional. The current health sector reform in Nigeria, which lays emphasis on service delivery on a background of very few radiographers, may lead to an increase in stress level. This study investigated the incidence of occupational stress among radiographers in southeastern Nigeria. 50 self-completion questionnaires were delivered to radiographers in the southeastern Nigeria. The questionnaires included questions seeking information on the demographic profile of the radiographer, anatomical regions of biomechanical systems/stress and Visual analogue scale (VAS), which rated job satisfaction and anxiety levels. 32 questionnaires were returned and analyzed statistically. Biomechanical stress was observed in all anatomical regions studied. Job satisfaction rating was 61.3% and anxiety level was 45.3%. This study has provided a baseline stress level and prevalence among radiographers with which future studies in view of the on going health sector reform in Nigeria could be compared.     

Faith and child survival: the role of religion in childhood immunization in Nigeria

This study assessed the role of mother's religious affiliation in child immunization status of surviving children 12 months of age and older in Nigeria, using data from the 2003 Nigeria Demographic and Health Survey (NDHS). Guided by two competing hypotheses--the 'characteristics hypothesis' and the 'particularized theology hypothesis'--variations in the risks of child immunization in Nigeria were examined using logistic regression analysis. The results indicate that religion plays a role in the risk of non-immunization; religion was not associated with the risk of partial immunization; however, religion was significantly associated with the reduced risk of full immunization.     

On a new species of electric catfish from Kainji, Nigeria, with some observations on its biology

A new species of electric catfish, Malapterurus minjiriya , from Kainji, Nigeria, is described and a key for separating it from the two other known species is given. Notes on some aspects of the biology of the electric catfishes in Lake Kainji, Nigeria are included.     

Genetic characteristics, coreceptor usage potential and evolution of Nigerian HIV-1 subtype G and CRF02_AG isolates

HIV-1 CRF02_AG and subtype G (HIV-1G) account for most HIV infections in Nigeria, but their evolutionary trends have not been well documented. To better elucidate the dynamics of the epidemic in Nigeria we characterised the gag and env genes of North-Central Nigerian HIV-1 isolates from pregnant women. Of 28 samples sequenced in both genes, the predominant clades were CRF02_AG (39%) and HIV-1G (32%). Higher predicted proportion of CXCR4-tropic (X4) HIV-1G isolates was noted compared to CRF02_AG (p = 0.007, Fisher''s exact test). Phylogenetic and Bayesian analysis conducted on our sequences and all the dated available Nigerian sequences on the Los Alamos data base showed that CRF02_AG and HIV-1G entered into Nigeria through multiple entries, with presence of HIV-1G dating back to early 1980s. This study underlines the genetic complexity of the HIV-1 epidemic in Nigeria, possible subtype-specific differences in co-receptor usage, and the evolutionary trends of the predominant HIV-1 strains in Nigeria, which may have implications for the design of biomedical interventions and better understanding of the epidemic.     

Genetic diversity of the Bambara groundnut (Vigna subterranea (L.) Verdc.) as assessed by SSR markers

Bambara groundnut ( Vigna subterranea (L.) Verdc.) is an important African legume crop. In this study, a collection consisting of 240 accessions was analyzed using 22 simple sequence repeat (SSR) markers. In total, 166 alleles were detected, with a mean of 7.59 alleles per locus. Allelic and gene diversities were higher in the west African and Cameroon/Nigeria regions with 6.68 and 6.18 alleles per locus, and 0.601 and 0.571, respectively. The genetic distance showed high similarity between west African and Cameroon/Nigeria accessions. Principal coordinate analyses and neighbor-joining analysis consistently revealed that the majority of west African accessions were grouped with Cameroon/Nigeria accessions, but they were differentiated from east African, central African, and southeast Asian accessions. Population structure analysis showed that two subpopulations existed, and most of the east African accessions were restricted to one subpopulation with some Cameroon/Nigeria accessions, whereas most of the west African accessions were associated with most of the Cameroon/Nigeria accessions in the other subpopulation. Comparison with SSR analysis of other Vigna cultigens, i.e., cultivated azuki bean ( Vigna angularis ) and mungbean ( Vigna radiata ), reveals that the mean gene diversity of Bambara groundnut was lower than azuki bean but higher than mungbean.     

Rethinking parenthood within assisted reproductive technology: The need for regulation in Nigeria

In Nigeria, reproduction is highly valued, with many people desiring to produce a child ‘in their own image and likeness’. Previously, aspiring parents often resorted to adoption. Today, the availability of assisted reproductive technologies (ARTs) has provided options other than adoption for those desiring to procreate. Through ARTs, aspirations for a family may be attained through an exchange of reproductive goods and services, and not necessarily through traditional heterosexual relationships. ARTs have altered the perception of parenthood as it exists in Nigeria, and courts face a difficult task in defining parenthood within Nigerian jurisprudence, as they can only adjudicate based on extant law. Although ARTs provide greater individual choices for fulfilling the desire to procreate, they raise a number of ethical and legal issues that evolving legal systems, such as that in Nigeria, are ill-equipped to manage. This paper describes the traditional assignment of parenthood under indigenous laws and other sources of law within the Nigerian jurisprudence. We carried out an in-depth study of the Nigerian legislative framework and found that there are no laws directly regulating parenthood, procreation and ARTs in Nigeria. We also found that the extant laws are only tangentially related and do not answer the relevant questions sufficiently well, especially concerning succession, nationality and assignment of responsibility in collaborative reproduction. We conclude by highlighting the need for and recommending a regulatory framework on ARTs with a particular focus on providing a definition for parenthood achieved through ARTs in Nigeria.     

High Genetic Variability of Schistosoma haematobium in Mali and Nigeria

Schistosoma haematobium is one of the most prevalent parasitic flatworms, infecting over 112 million people in Africa. However, little is known about the genetic diversity of natural S. haematobium populations from the human host because of the inaccessible location of adult worms in the host. We used 4 microsatellite loci to genotype individually pooled S. haematobium eggs directly from each patient sampled at 4 endemic locations in Africa. We found that the average allele number of individuals from Mali was significantly higher than that from Nigeria. In addition, no significant difference in allelic composition was detected among the populations within Nigeria; however, the allelic composition was significantly different between Mali and Nigeria populations. This study demonstrated a high level of genetic variability of S. haematobium in the populations from Mali and Nigeria, the 2 major African endemic countries, suggesting that geographical population differentiation may occur in the regions.