Low-Cost Hourly Ambient Black Carbon Measurements at Multiple Cities in Africa.

There is a notable lack of continuous monitoring of air pollutants in the Global South, especially for measuring chemical composition, due to the high cost of regulatory monitors. Using our previously developed low-cost method to quantify black carbon (BC) in fine particulate matter (PM) by analyzing reflected red light from ambient particle deposits on glass fiber filters, we estimated hourly ambient BC concentrations with filter tapes from beta attenuation monitors (BAMs). BC measurements obtained through this method were validated against a reference aethalometer between August 2 and 23, 2023 in Addis Ababa, Ethiopia, demonstrating a very strong agreement ( = 0.

Effects of Performance-Based Financing on Availability, Quality, and Use of Family Planning Services in the Democratic Republic of Congo: An Impact Evaluation.

Access to high-quality family planning services remains limited in many low- and middle-income countries, resulting in a high burden of unintended pregnancies and adverse health outcomes. We used data from a large randomized controlled trial in the Democratic Republic of Congo to test whether performance-based financing (PBF) can increase the availability, quality, and use of family planning services. Starting at the end of 2016, 30 health zones were randomly assigned to a PBF program, in which health facilities received financing conditional on the quantity and quality of offered services.

Retention and Predictors of Attrition Among People Living With HIV on Antiretroviral Therapy in Guinea: A 13-Year Historical Cohort Study in Nine Large-Volume Sites.

The objective of this study was to estimate the retention rate of patients in an ART program and identify the predictors of attrition. This was a historical cohort study of HIV patients who started ART between September 2007 and April 2020, and were followed up on for at least 6 months in nine large-volume sites. Kaplan Meier techniques were used to estimate cumulative retention and attrition probabilities.

Simulating the impact of varying vegetation on West African monsoon surface fluxes using a regional convection-permitting model.

This study assessed the sensitivity of the West African climate to varying vegetation fractions. The assessment of a such relationship is critical in understanding the interactions between land surface and atmosphere. Two sets of convection-permitting simulations from the UK Met Office Unified Model at 12 km horizontal resolution covering the monsoon period May-September (MJJAS) were used, one with fixed vegetation fraction (MF-V) and the other with time-varying vegetation fraction (MV-V).

Observed and Modeled Seasonal Air Quality and Respiratory Health in Senegal During 2015 and 2016.

In this work, we use existing particulate matter (PM) data from Dakar, Senegal, satellite aerosol optical depth (AOD) and the Weather Research and Forecasting (WRF) model to evaluate the role of dust transport from the Sahara and PM concentrations and exposure into other administrative districts of Senegal during 2015 and 2016. We also use data from the Ministry of Health to examine spatial and temporal patterns of acute respiratory infections, asthma, bronchitis, and tuberculosis across Senegal with an emphasis on Northern Hemisphere winter December-February, when air quality is poor, and June-August when there is an improvement in air quality. Measurements in Dakar, Senegal, suggest hazardous PM concentrations associated with Saharan dust storms but lower PM concentrations during the summer.

Sequelae of thoracic tuberculosis: manifestations and patients'quality of life.

For many patients, a history of tuberculosis is synonymous with disabling sequelae, impaired quality of life, and high morbidity and mortality. This retrospective study reviewed the files of patients hospitalized for sequelae of thoracic tuberculosis during 2017, to assess its various manifestations and their impact on quality of life. Of the 176 patients included, 75 % were aged from 35 to 65 years.

[Smoking in People Living with HIV (PLHA) and followed up in the Outpatient Department of the Hospital Fann of Dakar].

Introduction: PLHA who smoke have twice the never-smoker mortality rate and have an increased risk of developing non-AIDS diseases. The prevalence of tobacco smoking is higher among PLHA than in the general population. The purpose of this study was to assess the prevalence of smoking among PLHA, to describe the clinical and spirometric features of smokers and ex-smokers and to assess their knowledge and attitudes toward smoking.

Lateral decubitus chest radiography or chest ultrasound to predict pleural adhesions before medical thoracoscopy: a prospective study.

Background: Medical thoracoscopy (MT) is the gold-standard to investigate unexplained pleural exudates. However, the major prerequisite is an easy pleural access obtained by creating an artificial pneumothorax at the beginning of the procedure which can be a challenge in case of pleural adhesions and make the procedure unsafe. The detection of pleural adhesions prior to MT is necessary.

Neonatal ophthalmia in Mali.

A newborn 3 hours old newborn presented bilateral eyelid edema with erythema and inflammatory hypertrophy of the palpebral conjunctiva. PCR of the conjunctival swabbing showed the presence of Chlamydia trachomatis DNA. Treatment with erythromycin suspension 125 mg/5 ml was initiated, supplemented by topical application of oxytetracycline ointment 1% and Azyter eye drops.

[Epidemiology of primary lung cancer among non-smokers in Senegal].

Introduction: According to global data for 2002, one quarter of new cases of primary bronchopulmonary cancer were non-smokers. We undertook this study with the aim of describing the epidemiological characteristics of non-smokers with primary bronchopulmonary cancer in the Dakar region of Senegal.

Methods: A multicenter descriptive study that included all non-smokers who presented with primary bronchopulmonary cancer between January 1st 2014 and December 31st 2015.

[Radiological features of microscopy-positive pulmonary tuberculosis in patients in the Pneumology Department at the National University Hospital, Fann, Dakar (Sénégal)].

This study aimed to determine the radiological features of microscopy-positive pulmonary tuberculosis (TB). We conducted a retrospective study, analyzing radiographical imaging of patients with microscopy-positive pulmonary tuberculosis between 15 November 2015 and 15 March 2016. The medical records of 66 patients meeting the inclusion criteria were selected, 81.

Diagnostic Accuracy of Lateral Decubitus Chest Radiography before Pleural Maneuvers for the Management of Pleurisies in the Era of Chest Ultrasound.

Background: Chest ultrasound (CUS) is the gold standard to detect pleural adhesions before pleural maneuvers. However, the CUS technique is not available in all countries where the assessment is only based on clinical examination and chest radiography.

Objective: To assess the value of lateral decubitus chest radiography (LDCR) to detect pleural adhesions.

Regression Analysis to Identify Factors Associated with Urinary Iodine Concentration at the Sub-National Level in India, Ghana, and Senegal.

Single and multiple variable regression analyses were conducted using data from stratified, cluster sample design, iodine surveys in India, Ghana, and Senegal to identify factors associated with urinary iodine concentration (UIC) among women of reproductive age (WRA) at the national and sub-national level. Subjects were survey household respondents, typically WRA. For all three countries, UIC was significantly different ( < 0.

Regression Analysis to Identify Factors Associated with Household Salt Iodine Content at the Sub-National Level in Bangladesh, India, Ghana and Senegal.

Regression analyses of data from stratified, cluster sample, household iodine surveys in Bangladesh, India, Ghana and Senegal were conducted to identify factors associated with household access to adequately iodised salt. For all countries, in single variable analyses, household salt iodine was significantly different ( < 0.05) between strata (geographic areas with representative data, defined by survey design), and significantly higher ( < 0.

New Statistical Approach to Apportion Dietary Sources of Iodine Intake: Findings from Kenya, Senegal and India.

Progress of national Universal Salt Iodization (USI) strategies is typically assessed by household coverage of adequately iodized salt and median urinary iodine concentration (UIC) in spot urine collections. However, household coverage does not inform on the iodized salt used in preparation of processed foods outside homes, nor does the total UIC reflect the portion of population iodine intake attributable to the USI strategy. This study used data from three population-representative surveys of women of reproductive age (WRA) in Kenya, Senegal and India to develop and illustrate a new approach to apportion the population UIC levels by the principal dietary sources of iodine intake, namely native iodine, iodine in processed food salt and iodine in household salt.

[Therapeutic itinerary and radiological features of positive microscopy tuberculosis patients at Centre Hospitalier National Universitaire de Fann (CHNUF), Dakar].

Introduction: The long diagnostic delay is responsible for the extension of radiological lesions and spread of TB in the community. These radiological lesions can leave significant scars responsible for respiratory disability.

Objective: The aim of the study is to characterize radiologic features according to tuberculosis diagnostic delay.

Hepatic cytolysis and bicytopenia after 15 days of four-drug tuberculosis treatment in Senegal.

We report the case of a 31-year-old immunocompetent woman residing in Senegal, with localized microscopy-proved pulmonary tuberculosis, complicated by macrophage activation syndrome and associated with viral hepatitis B, identified due to hepatic cytolysis and a bicytopenia.

[Contribution of the Xpert MTB/RIF to the etiological diagnosis of tuberculous pleurisy].

Introduction: Performance of the Xpert MTB/RIF for the detection of Mycobacterium tuberculosis in pleural liquid is poorly described. The aim of this study was to determine its usefulness for the etiological diagnosis of a tuberculous pleurisy.

Patients And Method: We performed a descriptive cross-sectional study, with analytical design, including all the patients having a unilateral serofibrinous pleurisy, exudative, lymphocytic, and sterile.

[Contribution of fiberoptic bronchoscopy in the diagnosis of pulmonary dragging].

Introduction: Bronchoscopy is recommended into the exploration of chronic lung diseases. This one is expensive and invasive. We conducted this study in order to assess the benefit of the bronchoscopy in the etiologic diagnosis of chronic lung diseases.

[Prevalence of tobacco smoking in primary and secondary schools in the Department of Dakar, Senegal].

Introduction: Tobacco smoke is a global health problem, and the largest avoidable cause of death in the world. The objective of our study was to determine the prevalence of tobacco smoking in schools in Dakar area (Senegal).

Materiel And Methods: This descriptive and analytical cross-sectional study was performed from September 2011 to June 2012 in 27 schools of the Dakar area.

[Lung cancer in Dakar, Senegal].

A prospective, multicenter was conducted in all specialized centers in the city of Dakar. The objective was to describe the epidemiology to assess the management of lung cancer. 45 patients were included.

[Smoking among health workers at four large hospitals in Dakar (Senegal)].

Introduction: The addiction to tobacco remains a significant problem in the context of medical practice in African in general and in Senegal in particular. It is an important cause of morbidity and mortality. The main purposes of this study were to establish the smoking habits of hospital staff as a step towards elaborating a strategy for an anti-smoking campaign within the hospital environment.

[Epidemiological, clinical, therapeutic and evolutionary aspects of pulmonary aspergilloma in Dakar].

Introduction: The presentation of pulmonary aspergilloma is dominated by haemoptysis, the results of medical treatment are disappointing and there is significant morbidity and mortality following surgery; the only really curative treatment. These facts emphasise the gravity of this condition. We undertook a study to estimate the current profile of the disease and its management in Senegal.

[Miliary tuberculosis: a report of 49 cases].

Introduction: Miliary tuberculosis is a severe, acute form of tuberculosis due to lymphohaematogenous dissemination of tubercle bacilli from a focal lesion.

Patients And Methods: A prospective study of was undertaken at the Pneumology Clinic of the National University Hospital Centre (CHUN) of Fann, over a period of 30 months (January 2007-June 2009), in order to assess the epidemiological, clinical, paraclinical and evolutionary aspects of miliary tuberculosis.

Results: Miliary tuberculosis accounted for 3.