Assessment of Immunization to Hepatitis B Vaccine among Children under Five Years in Rural Areas of Taiz, Yemen.

. Hepatitis B virus (HBV) infection poses a major health problem worldwide. approximately 1 million deaths annually due to cirrhosis and hepatocellular carcinoma.

Patients direct costs to undergo TB diagnosis.

Background: A major impediment to the treatment of TB is a diagnostic process that requires multiple visits. Descriptions of patient costs associated with diagnosis use different protocols and are not comparable.

Methods: We aimed to describe the direct costs incurred by adults attending TB diagnostic centres in four countries and factors associated with expenditure for diagnosis.

Barriers to completing TB diagnosis in Yemen: services should respond to patients' needs.

Objectives And Background: Obtaining a diagnosis of tuberculosis (TB) is a prerequisite for accessing specific treatment, yet one third of estimated new cases are missed worldwide by National Programmes. This study investigated economic, geographical, socio-cultural and health system factors hindering adults' attendance and completion of the TB diagnostic process in Yemen, to inform interventions designed to improve patient access to services.

Methodology: The study employed a mixed methods design comprising a cross-sectional survey and In-Depth-Interviews (IDIs) and Focus Group Discussions (FGDs) among patients abandoning the diagnosis or registering for treatment.

LED fluorescence microscopy for the diagnosis of pulmonary tuberculosis: a multi-country cross-sectional evaluation.

Background: The diagnosis of tuberculosis (TB) in resource-limited settings relies on Ziehl-Neelsen (ZN) smear microscopy. LED fluorescence microscopy (LED-FM) has many potential advantages over ZN smear microscopy, but requires evaluation in the field. The aim of this study was to assess the sensitivity/specificity of LED-FM for the diagnosis of pulmonary TB and whether its performance varies with the timing of specimen collection.

A multi-country non-inferiority cluster randomized trial of frontloaded smear microscopy for the diagnosis of pulmonary tuberculosis.

Background: More than 50 million people around the world are investigated for tuberculosis using sputum smear microscopy annually. This process requires repeated visits and patients often drop out.

Methods And Findings: This clinical trial of adults with cough ≥2 wk duration (in Ethiopia, Nepal, Nigeria, and Yemen) compared the sensitivity/specificity of two sputum samples collected "on the spot" during the first visit plus one sputum sample collected the following morning (spot-spot-morning [SSM]) versus the standard spot-morning-spot (SMS) scheme.

Rotavirus and norovirus infections in children in Sana'a, Yemen.

Objectives: To describe the epidemiology of rotavirus and norovirus infection among children with acute gastroenteritis in Sana'a, Yemen.

Methods: A cross-sectional study from November 2007 to March 2009 of children aged 1 month to 5 years attending the emergency and outpatient departments of two hospitals in Sana'a with acute gastroenteritis. Rotavirus was detected by ELISA and genotyped by RT-PCR.

Sharing experiences and dilemmas of conducting focus group discussions on HIV and tuberculosis in resource-poor settings.

Focus group discussions (FGD) are gaining in popularity in research on HIV and tuberculosis (TB) internationally as researchers seek to understand the experiences, needs and perspectives of people living with TB and/or HIV as well as their carers within the community and health sector. Conducting FGDs in resource-poor settings with vulnerable participants who are living with diseases that are frequently stigmatised poses multiple challenges. Our approach in this discussion paper is to follow the research cycle to present the practical experience of research teams using FGDs in TB and HIV in resource-poor contexts in Africa and Asia in order to contribute to effective practice.

Multiple sampling in one day to optimize smear microscopy in children with tuberculosis in Yemen.

Background And Aim: The diagnosis of pulmonary Tuberculosis (TB) in children is difficult and often requires hospitalization. We explored whether the yield of specimens collected for smear microscopy from different anatomical sites in one visit is comparable to the yield of specimens collected from a single anatomical site over several days.

Methodology And Principal Findings: Children with signs/symptoms of pulmonary TB attending a reference hospital in Sana'a Yemen underwent one nasopharyngeal aspirate (NPA) the first day of consultation and three gastric aspirates (GA) plus three expectorated/induced sputa over 3 consecutive days.

Front-loading sputum microscopy services: an opportunity to optimise smear-based case detection of tuberculosis in high prevalence countries.

Setting. Ethiopia, Nepal, Nigeria, and Yemen. Objective.

Human metapneumovirus and respiratory syncytial virus disease in children, Yemen.

Factors increasing the severity of respiratory infections in developing countries are poorly described. We report factors associated with severe acute respiratory illness in Yemeni children (266 infected with respiratory syncytial virus and 66 with human metapneumovirus). Age, indoor air pollution, and incomplete vaccinations were risk factors and differed from those in industrialized countries.

Respiratory syncytial virus and human metapneumovirus in children with acute respiratory infections in Yemen.

A survey of 604 Yemeni children younger than 2 years with acute respiratory infections identified respiratory syncytial virus (RSV) in 244 (40%), human metapneumovirus (HMPV) in 41 (7%) and RSV/HMPV coinfection in 25 (4%) children. RSV infections occurred in younger children and were associated with more severe hypoxia than observed with HMPV. Both viruses are important causes of severe acute respiratory infection in Yemen.