"Achieving, maintaining and improving accuracy, timeliness and reliability are major challenges for health laboratories. Countries worldwide committed themselves to build national capacities for the detection of, and response to, public health events of international concern when they decided to eng...age in the International Health Regulations implementation process. Only sound management of quality in health laboratories will enable countries to produce test results that the international community will trust in cases of international emergency. This handbook is intended to provide a comprehensive reference on Laboratory Quality Management System for all stakeholders in health laboratory processes, from management, to administration, to bench-work laboratorians. This handbook covers topics that are essential for quality management of a public health or clinical laboratory. They are based on both ISO 15189 and CLSI GP26-A3 documents"--Page 7.
more
Statistical Report No 25: 2014
Statistical Report | No. 39: 2013
This report investigates the impact of potential misclassification of samples on HIV prevalence estimates for 23 surveys conducted from 2010-2014. In addition to visual inspection of laboratory results, we examined how accounting for potential misclassification of HIV status through Bayesian latent ...class models affected the prevalence estimates. Two types of Bayesian models were specified: a model that only uses the individual dichotomous test results and a continuous model that uses the quantitative information of the EIA (i.e., the signal-to-cutoff values). Overall, we found that adjusted prevalence estimates matched the surveys’ original results, with overlapping uncertainty intervals. This suggested that misclassification of HIV status should not affect the prevalence estimates in most surveys. However, our analyses suggested that two surveys may be problematic. The prevalence could have been overestimated in the Uganda AIDS Indicator Survey 2011 and the Zambia Demographic and Health Survey 2013-14, although the magnitude of overestimation remains difficult to ascertain. Interpreting results from the Uganda survey is difficult because of the lack of internal quality control and potential violation of the multivariate normality assumption of the continuous Bayesian latent class model. In conclusion, despite the limitations of our latent class models, our analyses suggest that prevalence estimates from most of the surveys reviewed are not affected by sample misclassification.
more
This report documents the findings from the Behavioral Surveillance Survey conducted among youuth aged 15-24 in Rwanda in 2009. The 2009 Youth BSS documented HIV knowledge, attitudes, and behaviors (KAB) among youth in Rwanda. The data provided a cross-sectional look at the current HIV KAB among yo...uth, and allowed for changes over time to be detected when analyzing these data against the results of the 2006 Youth BSS.
more
In where under-five mortality is high and vitamin A deficiency is a public health problem, two high-dose supplements of vitamin A per year, spaced four to six months apart, can strengthen children’s immune systems and improve their chances of survival.
During much of early childhood – from... 6 months to 5years of age – two high doses of vitamin A every year can prevent blindness and hearing loss, boost children’s immunity against diseases like measles and diarrhoea and provide critical protection against death. Like all forms of malnutrition, vitamin A deficiency is a marker of inequality. In countries where diets are lacking in vitamin A and infections and deaths are prevalent, supplementation programmes give vulnerable children a better chance to survive, develop and thrive.
more
Key findings of the 2018 edition