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.
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n 2015, Member States of the United Nations adopted the 2030 Agenda for Sustainable Development and its accompanying Sustainable Development Goals (SDGs), with the third goal of the agenda focusing on health – good health and well-being. This has the attainment of universal health coverage (UHC) a...s its umbrella target. Since then, the WHO Regional Office for Africa has been supporting countries plan, and monitor progress towards this goal. This report represents an analysis of the evidence so far countries are making towards this goal, and includes the effect COVID-19 has had on its attainment so far. It also makes recommendations on how countries can prioritize their health actions post COVID-19, in a manner that allows acceleration of progress towards UHC.
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This document aims to describe a minimum set of surveillance activities recommended at the national level to detect and monitor the relative prevalence of SARS-CoV-2 variants and outline a set of activities for the characterization and assessment of risk posed by these variants. A set of indicators ...is also provided to standardize monitoring and public reporting of variant circulation.
The document is primarily intended for national and sub-national public health authorities and partners who support implementation of surveillance for SARS-CoV-2 variants
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Eine Informationsschrift für Ärztinnen und Ärzte, Beraterinnen und Berater unter Verwendung von Information der WHO
Available in Arabic, Chinese, English, French, Portuguese, Russian and Spanish
https://apps.who.int/iris/handle/10665/334254
Climate change triggers mounting food insecurity, poverty and displacement in Africa
информационный листок о курении табака через кальян и последствиях для здоровья
Available in Arabic, Chinese, English, French, Portuguese, Russian and Spanish
https://apps.who.int/iris/handle/10665/334254
document d’information scientifique, 17 juin 2020
Hypertension and COVID-19: Scientific report - 17 June 2021
Scientific Brief, 17 June 2021