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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27 May 2021
All countries should increase their level of preparedness, alert and response to identify, manage and care for new cases of COVID-19. Countries should prepare to respond to different public health scenarios, recognizing that there is no one-size-fits-all approach to managing cases and o...utbreaks of COVID-19. Each country should assess its risk and rapidly implement the necessary measures at the appropriate scale to reduce both COVID-19 transmission and economic, public and social impacts.
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Despite recent global declines, under-five mortality remains high in many of the poorest countries. Barriers to timely
quality care, including user fees, distance to facilities and the availability of trained health workers and medical supplies,
hinder progress in further reducing morbidity and m...ortality
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The leishmaniases are a group of diseases caused by Leishmania spp., which occur in cutaneous, mucocutaneous and visceral forms. They are neglected tropical diseases (NTDs), which disproportionately affect marginalized populations who have limited access to health care. HIV co-infected patients with... Leishmania infection are highly infectious to sandflies, and an increase in the coinfection rate in an endemic area is likely to increase the effective infective reservoir.
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This document defines the framework for Malawi’s National HIV Programs. Considering public health benefits and risks, as well as funding and resource implications, deviations from these guidelines are not supported by the Ministry of Health.
Towards a world free of tuberculosis
The document outlines comprehensive guidelines for managing cholera outbreaks in South Africa, focusing on prevention, diagnosis, treatment, and public health measures. It emphasizes the importance of rehydration therapy, sanitation, clean water access, and community involvement to control the sprea...d of the disease. It also provides protocols for handling outbreaks, including case identification, laboratory confirmation, and multi-sectoral coordination to reduce morbidity and mortality rates.
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The guide explains how vaccines work and answers your common questions as well as providing up-to-date information on the current approved COVID-19 vaccinations in the UK.
This guide was written in January 2021 and updated in March 2021 and is accurate at the time of publishing. Information will b...e updated as it becomes available.
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(Published with Decision No. 3003/QðBYT dated 19/8/2009 of the Minister of Health)
The guidelines are primarily intended for health-care professionals working in first- or second-level health-care facilities, including emergency, inpatient and outpatient services. They are also directed at policy-makers, health-care planners and programme managers, academic institutions, non-gover...nmental and civil society organizations to inform capacity-building, teaching and research agendas.
Web annex A provides the quantitative evidence reports, Web annex B summarizes the qualitative and economic evidence and Web annex C presents the Evidence-to-Decision frameworks.
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Buruli ulcer (BU) is a bacterial skin infection that is caused by Mycobacterium ulcerans and mainly affects people who reside in the rural areas of Africa and in suburban and beach resort communities in Australia.
Cases of monkeypox (MPX) acquired in the EU have recently been reported in nine EU Member States (Austria, Belgium, France, Germany, Italy, Portugal, Spain, Sweden, and the Netherlands).
Monkeypox (MPX) does not spread easily between people. Human-to-human transmission occurs through close contact ...with infectious material from skin lesions of an infected person, through respiratory droplets in prolonged face-to-face contact, and through fomites. The predominance, in the current outbreak, of diagnosed human MPX cases among men having sex with men (MSM), and the nature of the presenting lesions in some cases, suggest transmission occurred during sexual intercourse
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