61 research outputs found

    News Media Representations of Women in Conflicts: The Boko Haram Conflict in Borno State, North East Nigeria (2012-2015) - A Study of Guardian, Daily Trust, Daily Sun, Leadership, Nation, and Thisday Newspapers

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    This is a study of news media representations of women in the Boko Haram conflict in Borno state, North East Nigeria (2012-2015) with a focus on six Nigerian national newspapers - Guardian, Daily Trust, Daily Sun, Leadership, Nation, and Thisday. It draws on post-colonial theories like Orientalism and the Subaltern; feminism; and the news media to examine how the news media have represented women in this conflict. The study adopted a mixed method approach combining quantitative content analysis and qualitative thematic analysis. The quantitative analysis examined the manifest contents of the newspaper articles in the sample to find out the pattern of frames used by Nigerian journalists to represent women in the Boko Haram conflict while the qualitative analysis examined information generated from semistructured interviews; documentary data; and the translation of YouTube videos released by the Boko Haram sect. A total of 404 newspaper articles were selected, categorized, and examined using SPSS software. Findings suggest that patriarchal phrases and gender stereotypes permeate news media narratives about women affected by the conflict. This thesis therefore provides a better understanding of how Nigerian news media represent women affected by conflicts and factors that inform these representations. This work also provides a better insight into how the intersectionality of gender with other social structures like class, age, ethnicity, religion, patriarchal discrimination and other forms of oppression have permeated media representations of women in the conflict. Results similarly suggest that the Nigerian media over rely on foreign news media organizations as their major story sources about the conflict. Because of this overreliance, this thesis argues that foreign news media set the agenda for Nigerian news media in their representations of women. This study has contributed to a better understanding of how elite news media in the more developed global North set the news agenda for developing nations of the global South like Nigeria through inter-media agenda setting. 12 Findings also suggest that the Nigerian news media system reflects the social, political, religious, ethnic, and regional factors of the area within which it operates in line with the framework of regional parallelism. This study has contributed to a better understanding of how Nigeria’s North/South dichotomies based on these factors have affected the news media. This thesis concludes that as a product of regional parallelism, the Nigerian news media reflect the intersectionality of gender, social structures such as race, ethnic, religious, sexual orientation and patriarchal discrimination with other forms of oppression to disadvantage women in the Boko Haram conflict

    Transfusion management of severe anaemia in African children: a consensus algorithm

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    The phase III Transfusion and Treatment of severe anaemia in African Children Trial (TRACT) found that conservative management of uncomplicated severe anaemia [haemoglobin (Hb) 40–60 g/l] was safe, and that transfusion volume (20 vs. 30 ml/kg whole blood equivalent) for children with severe anaemia (Hb 37·5°C). In 2020 a stakeholder meeting of paediatric and blood transfusion groups from Africa reviewed the results and additional analyses. Among all 3196 children receiving an initial transfusion there was no evidence that nutritional status, presence of shock, malaria parasite burden or sickle cell disease status influenced outcomes or modified the interaction with fever status on volume required. Fever status at the time of ordering blood was a reliable determinant of volume required for optimal outcome. Elevated heart and respiratory rates normalised irrespective of transfusion volume and without diuretics. By consensus, a transfusion management algorithm was developed, incorporating three additional measurements of Hb post-admission, alongside clinical monitoring. The proposed algorithm should help clinicians safely implement findings from TRACT. Further research should assess its implementation in routine clinical practice

    Safety and immunogenicity of a chimpanzee adenovirus-vectored Ebola vaccine in healthy adults: a randomised, double-blind, placebo-controlled, dose-finding, phase 1/2a study.

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    BACKGROUND: The ongoing Ebola outbreak led to accelerated efforts to test vaccine candidates. On the basis of a request by WHO, we aimed to assess the safety and immunogenicity of the monovalent, recombinant, chimpanzee adenovirus type-3 vector-based Ebola Zaire vaccine (ChAd3-EBO-Z). METHODS: We did this randomised, double-blind, placebo-controlled, dose-finding, phase 1/2a trial at the Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland. Participants (aged 18-65 years) were randomly assigned (2:2:1), via two computer-generated randomisation lists for individuals potentially deployed in endemic areas and those not deployed, to receive a single intramuscular dose of high-dose vaccine (5 × 10(10) viral particles), low-dose vaccine (2·5 × 10(10) viral particles), or placebo. Deployed participants were allocated to only the vaccine groups. Group allocation was concealed from non-deployed participants, investigators, and outcome assessors. The safety evaluation was not masked for potentially deployed participants, who were therefore not included in the safety analysis for comparison between the vaccine doses and placebo, but were pooled with the non-deployed group to compare immunogenicity. The main objectives were safety and immunogenicity of ChAd3-EBO-Z. We did analysis by intention to treat. This trial is registered with ClinicalTrials.gov, number NCT02289027. FINDINGS: Between Oct 24, 2014, and June 22, 2015, we randomly assigned 120 participants, of whom 18 (15%) were potentially deployed and 102 (85%) were non-deployed, to receive high-dose vaccine (n=49), low-dose vaccine (n=51), or placebo (n=20). Participants were followed up for 6 months. No vaccine-related serious adverse events were reported. We recorded local adverse events in 30 (75%) of 40 participants in the high-dose group, 33 (79%) of 42 participants in the low-dose group, and five (25%) of 20 participants in the placebo group. Fatigue or malaise was the most common systemic adverse event, reported in 25 (62%) participants in the high-dose group, 25 (60%) participants in the low-dose group, and five (25%) participants in the placebo group, followed by headache, reported in 23 (57%), 25 (60%), and three (15%) participants, respectively. Fever occurred 24 h after injection in 12 (30%) participants in the high-dose group and 11 (26%) participants in the low-dose group versus one (5%) participant in the placebo group. Geometric mean concentrations of IgG antibodies against Ebola glycoprotein peaked on day 28 at 51 μg/mL (95% CI 41·1-63·3) in the high-dose group, 44·9 μg/mL (25·8-56·3) in the low-dose group, and 5·2 μg/mL (3·5-7·6) in the placebo group, with respective response rates of 96% (95% CI 85·7-99·5), 96% (86·5-99·5), and 5% (0·1-24·9). Geometric mean concentrations decreased by day 180 to 25·5 μg/mL (95% CI 20·6-31·5) in the high-dose group, 22·1 μg/mL (19·3-28·6) in the low-dose group, and 3·2 μg/mL (2·4-4·9) in the placebo group. 28 (57%) participants given high-dose vaccine and 31 (61%) participants given low-dose vaccine developed glycoprotein-specific CD4 cell responses, and 33 (67%) and 35 (69%), respectively, developed CD8 responses. INTERPRETATION: ChAd3-EBO-Z was safe and well tolerated, although mild to moderate systemic adverse events were common. A single dose was immunogenic in almost all vaccine recipients. Antibody responses were still significantly present at 6 months. There was no significant difference between doses for safety and immunogenicity outcomes. This acceptable safety profile provides a reliable basis to proceed with phase 2 and phase 3 efficacy trials in Africa. FUNDING: Swiss State Secretariat for Education, Research and Innovation (SERI), through the EU Horizon 2020 Research and Innovation Programme

    Use of ChAd3-EBO-Z Ebola virus vaccine in Malian and US adults, and boosting of Malian adults with MVA-BN-Filo: a phase 1, single-blind, randomised trial, a phase 1b, open-label and double-blind, dose-escalation trial, and a nested, randomised, double-blind, placebo-controlled trial

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    SummaryBackgroundThe 2014 west African Zaire Ebola virus epidemic prompted worldwide partners to accelerate clinical development of replication-defective chimpanzee adenovirus 3 vector vaccine expressing Zaire Ebola virus glycoprotein (ChAd3-EBO-Z). We aimed to investigate the safety, tolerability, and immunogenicity of ChAd3-EBO-Z in Malian and US adults, and assess the effect of boosting of Malians with modified vaccinia Ankara expressing Zaire Ebola virus glycoprotein and other filovirus antigens (MVA-BN-Filo).MethodsIn the phase 1, single-blind, randomised trial of ChAd3-EBO-Z in the USA, we recruited adults aged 18–65 years from the University of Maryland medical community and the Baltimore community. In the phase 1b, open-label and double-blind, dose-escalation trial of ChAd3-EBO-Z in Mali, we recruited adults 18–50 years of age from six hospitals and health centres in Bamako (Mali), some of whom were also eligible for a nested, randomised, double-blind, placebo-controlled trial of MVA-BN-Filo. For randomised segments of the Malian trial and for the US trial, we randomly allocated participants (1:1; block size of six [Malian] or four [US]; ARB produced computer-generated randomisation lists; clinical staff did randomisation) to different single doses of intramuscular immunisation with ChAd3-EBO-Z: Malians received 1 × 1010 viral particle units (pu), 2·5 × 1010 pu, 5 × 1010 pu, or 1 × 1011 pu; US participants received 1 × 1010 pu or 1 × 1011 pu. We randomly allocated Malians in the nested trial (1:1) to receive a single dose of 2 × 108 plaque-forming units of MVA-BN-Filo or saline placebo. In the double-blind segments of the Malian trial, investigators, clinical staff, participants, and immunology laboratory staff were masked, but the study pharmacist (MK), vaccine administrator, and study statistician (ARB) were unmasked. In the US trial, investigators were not masked, but participants were. Analyses were per protocol. The primary outcome was safety, measured with occurrence of adverse events for 7 days after vaccination. Both trials are registered with ClinicalTrials.gov, numbers NCT02231866 (US) and NCT02267109 (Malian).FindingsBetween Oct 8, 2014, and Feb 16, 2015, we randomly allocated 91 participants in Mali (ten [11%] to 1 × 1010 pu, 35 [38%] to 2·5 × 1010 pu, 35 [38%] to 5 × 1010 pu, and 11 [12%] to 1 × 1011 pu) and 20 in the USA (ten [50%] to 1 × 1010 pu and ten [50%] to 1 × 1011 pu), and boosted 52 Malians with MVA-BN-Filo (27 [52%]) or saline (25 [48%]). We identified no safety concerns with either vaccine: seven (8%) of 91 participants in Mali (five [5%] received 5 × 1010 and two [2%] received 1 × 1011 pu) and four (20%) of 20 in the USA (all received 1 × 1011 pu) given ChAd3-EBO-Z had fever lasting for less than 24 h, and 15 (56%) of 27 Malians boosted with MVA-BN-Filo had injection-site pain or tenderness.Interpretation1 × 1011 pu single-dose ChAd3-EBO-Z could suffice for phase 3 efficacy trials of ring-vaccination containment needing short-term, high-level protection to interrupt transmission. MVA-BN-Filo boosting, although a complex regimen, could confer long-lived protection if needed (eg, for health-care workers).FundingWellcome Trust, Medical Research Council UK, Department for International Development UK, National Cancer Institute, Frederick National Laboratory for Cancer Research, Federal Funds from National Institute of Allergy and Infectious Diseases

    The effects of single and combined chemotherapy of DL - &#945 -Difluoromethyornithine and diminazene aceturate in experimental Trypanosoma brucei gambiense infection in mice

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    No Abstract.Nigerian Veterinary Journal Vol. 29 (1) 2008: pp. 49-5

    Prevalence of Helminthic Infections among Wild Animals in Yankari Game Reserve, Nigeria

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    The prevalence of helminthic parasites among wild animals in Yankari Game Reserve, Nigeria was assessed for the first time. Out of a total of 397 wild animals belonging to 3 groups and 17 species examined, the infection was significantly (P < 0.05) high among small spotted genet cats (Genetta genetta) 3(33.33%), baboons (Papio anubis) 51(47.66%), red pattas monkeys (Erythrocebus pattas) 3(33.33%), tantalus monkeys (Cercopethicus aethiopes tantalus) 5(100%), waterbucks (Kobus deffasa) 10(96.92%), buffalos (Cyncerus caffer) 6(60%) and Hippopotami (Hippopotami amphibious) 3(100%). This is in comparison to lower prevalence rates encountered among the lions (Panthera leo) 12(27.91%), African civet cats (Viverra civetta) 5(15.15%), serval cats (Felis serval) 14.29%), Temminek’s golden cats (Felis temminekii) 1(25%) and crocodiles (Crocodylus niloticus) 3(7.89%). Similarly, it was lower among the Proboscidae / Artiodactyla, African elephants (Loxodonta africana) 11(16.42%), bushbucks (Tragelaphus scriptus) 1(18.0%), warthogs (Phacochoerus aethiopes) 5(26.32%) and hartebeests (Alcelaphus buselaphus) 2(22.22%). Among the primates and Artiodactyla/Proboscidae, the males were more infected than their female counterparts (p<0.05). However, among the carnivores/reptiles the females were significantly (p<0.05) more infected than their male counterparts. According to age, the young animals were more infected than their adult counterparts (p<0.05). Mean faecal egg counts revealed that the intensity of infection was generally low to moderate in most animal groups. However, among the lions (Panthera leo) egg counts of 225.0 ± 0.41 due to Strongyloides and 237.5 ± 0.42 due to Strongyle infections were significantly high (P<0.05). Similarly, the baboons (Papio anubis) and African elephants (Loxodonta africana) had 203.3 ± 0.01 due to Ascaris and 450 ± 21.21 due to Strongyloides respectively. The warthogs (Phacochoerus aethiopes) and hippopotami (Hippopotami amphibious), counts of 220 ± 1.85 and 200 ± 14.14 due to Toxoascaris and Dicrocoelum species were encountered respectively. Faecal culture and larval recovery revealed that Strongyloides canis and Ancylostoma caninum larvae were common among the carnivores. For the primates, Stronyloides stercoralis and Ancylostoma duodenale were encountered while, Haemonchus contortus, Stronyloides pappilosus, Trichostrongylus colubrioformis and Oesophagostamum columbianum were encountered among the Artiodactyla/ Proboscidae. In conclusion the wild animals harboured medical and veterinary parasites of various intensities

    Optimization of flotation conditions in the beneficiation of PGMs tailings

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    For several years, mining waste has shown a negative impact on both the environment and human health. The mining industry remains the backbone of the economic growth. Different technologies have been implemented to beneficiate and recover platinum group metals from tailings. The recycling of tailings has been a point of research interest due to their extensive applications. Flotation has been the primary process of upgrading and recovering PGMs. The focus of this study was to optimize flotation conditions in the beneficiation of PGMs for particular small-scale mine tailings. This was done to obtain the most favourable conditions for the small-scale mine tailings to improve operating conditions of specific particle sizes. PGMs tailings obtained from a small-scale mine were characterized using XRD, XRF, SEM/EDS, and ICP – OES to understand the properties of the tailings prior to mineral processing. Flotation batch tests were conducted. The results showed that the chosen particle size was 75 µm, and the favorable reagent dosages were 150 g/Mg and 100 g/Mg for SIBX (collector) and Starch(depressant), respectively. At favourable conditions, the recovery was 65.75% (Pt = 70.38%, Pd = 59.33%, Ru = 34.56%), and the grade was 31.46 g/Mg (Pt = 21.43 g/Mg, Pd = 9.62 g/Mg, Ru = 0.41 g/Mg). It can be concluded that all the flotation parameters are related; lower particle sizes yield high recoveries and better grades due to the exposure of the particle surface to the reagents responsible for the flotation of the PGMs. It was observed that the high collector dosages produce high recoveries with low grades of PGMs. High depressant dosages produce low recoveries with high grades of PGMs. The relationship between the collector and the depressant is of essential importance in the flotation process
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