WHO HIV drug resistance report 2012

This report assesses the general levels of transmitted and acquired drug resistance in select geographical areas of low- and middle-income countries. It is based on two distinct data sources: surveys performed to assess transmitted and acquired drug resistance using standardized World Health Organization (WHO) methods (WHO surveys) and a broad systematic review of the published literature on transmitted and acquired drug resistance. Findings from the monitoring of early warning indicators of HIV drug resistance are also presented and discussed.