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Estimating HIV prevalence

A cautious note on household surveys in poor settings

The World Health Organization’s HIV prevalence estimates have recently been adjusted downwards, mostly because of new data from population based surveys.1 But such surveys are limited by surveyor bias—they are typically performed on large numbers of respondents by small numbers of surveyors—and this could disproportionately influence (worldwide) HIV prevalence estimates.

http://www.bmj.com/content/341/bmj.c6323

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