Farmers' production constraints, preferred varietal traits and perceptions on sorghum grain mold in Senegal.

Improving sorghum adoption rates by developing adapted varieties that meet end-user preferences is a major challenge in West Africa. In this study, a participatory rural appraisal was undertaken to identify the main sorghum production constraints, farmers' preferred variety traits and their perceptions on sorghum grain mold. The study was conducted in four representative rural communities located in the main sorghum producing area of Senegal. A total of 260 farmers were interviewed and data were collected through focus group discussions and individual questionnaires. Our results indicated that Striga, insects, poor soil fertility and drought are the major sorghum producing constraints in Senegal. Grain mold was identified as the second most important sorghum disease after the damping-off. Discoloration on grain surface was the most important criteria farmers used to recognize the disease. The most important sorghum traits farmers desired in improved varieties are medium to short plant maturity cycle, medium plant height, large open or semi-compact panicle, big and white grain, and adaptation to local growing conditions. The results showed that the sorghum cropping system is dominated by male farmers who mainly grow local landraces. These results will provide updated recommendations for the breeding products profile to meet end-user preferences in Senegal.

Treatment of retinoblastoma in Sub-Saharan Africa: Experience of the paediatric oncology unit at Gabriel Toure Teaching Hospital and the Institute of African Tropical Ophthalmology, Bamako, Mali.

BACKGROUND: Retinoblastoma (Rb) is the most common intraocular primary malignancy in children. In industrialised countries, the cure rate is about 95%. We present the results of a prospective study on the management of Rb in the paediatric oncology unit of Gabriel Touré Teaching Hospital and African Institute of Tropical Ophthalmology, from November 1, 2011 to December 31, 2015. PROCEDURE: The aims of this prospective study were to evaluate the treatment of localised Rb, ocular prosthesis after enucleation, conservative management for bilateral Rb as well as survival rates in all patients. Patients with early stage Rb at diagnosis were included. The treatment was performed according to the retinoblastoma treatment guidelines of the French-African Paediatric Oncology Group. RESULTS: Eighty-eight patients were included in the study. Sex ratio was 1:1 (M = 44, F = 44). Median age at diagnosis was 3 years (range: 2 months-5 years). Unilateral intraocular Rb was predominant (n = 50; 56.8%). Conservative treatments were performed on nine eyes in nine patients. Overall survival and event-free survival of the entire cohort at the end of 4 years were 73% (95% CI 60.8-81.2%) and 59% (95% CI 47.9-69.5%), respectively, with a median follow-up of 3.7 years (0.1-5.6 years). In conclusion, early enucleation in early stage of Rb can improve outcomes in resource-limited countries. Delayed enucleation and refusal of adherence to treatment are still major concerns and remain a barrier to improving overall patient survival.

Epidemiology of migraine among students in Mali.

Migraine is a debilitating but benign disease that can affect the quality of life of patients, disrupt the emotional relationships and impact on educational and vocational activities. The aim of our work was to study the epidemiology and impact of migraine in schools in the urban district of GAO in Mali. This is a cross-sectional study among students in the city of Gao. The survey was conducted in 11 schools, each of which represented a cluster. The study involved 733 students and diagnosis of migraine was made according to the 2004 IHS criteria except the criterion for the number of crises. The overall prevalence of migraine in school was 17.3% (95% CI [14.6% to 20%]). The headache prevalence among students was 20% (95% CI [16.91% to 23.09]), it was significantly higher 23.0% in girls than in boys 14.8% (p < 0.01). About its impact on school life, 63.8% of students had experienced absenteeism due to migraine from 1 to 14 days in the last quarter preceding the survey with a limiting concentration in 19.2% of students with migraine. In conclusion, migraine is common among students of Gao, it is more important in female. It has a negative impact on academic performance. It is therefore necessary to control its management to reduce the extent of the disease in this environment.