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By August 2015, final results became available from national TB prevalence surveys implemented between 2012 and 2014 in Ghana, Malawi, Soudan, the Republic of Tanzania, Zambia and Zimbabwe.  Prevalence surveys result in estimates of prevalence that are generally more precise and more accurate than previous estimates indirectly derived from estimated incidence and heavily influenced by expert-opinion (see Figure 1). Details are provided in the \textbf{online technical appendix}.