HIV/AIDS - Research and Palliative Care 2016:8 183–193
Technical Report
AIDS Medicines and diagnostics service
September 2016
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Thirty-three years after its discovery, the Human Immunodeficiency Virus (HIV), responsible for the AIDS pandemic, remains a major public health problem despite advanced researches providing better diagnostic and therapeutic tools. The virus targets especially CD4+ T cells, leading to deficiency of ...the immune system and altering therefore defense against infections and cancer cells. Antiretroviral
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Evaluation report November 2014
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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African Journal of Emergency Medicine
Volume 11, Issue 1, March 2021, Pages 165-170
The COVID-19 pandemic has had an unprecedented impact on health care systems that, in many instances, worsened the already existing assistance gaps. When it comes to Latin America and Central America, this challenge adds to the consequences mass mobilizations have had in recent years, which have exc...eeded the national capacities to provide prompt assistance and social protection, particularly in the health care field. This pandemic has a direct impact on people on the move since the movement restriction policies and the lockdown and social distancing measures have reduced their ability to insert themselves into economic activities that were already precarious in many cases. Consequently, they have less access to food, housing, medicines and other essential consumer goods, and fewer possibilities of getting to their countries of destinati
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