Anti-malarial, drug-resistance studies in Myanmar and neighbouring countries, by region and year. Blue squares represent the locations of in vivo, in vitro and molecular studies conducted between 1996 and 2009; locations of the current study (2008–2009) appear as red circles (n = 13 sites). Studies reporting prevalence of pfmdr1 copy number amplification or pfcrt K76T haplotypes are numbered on the map and on the x-axis of the bar figures, in order of data collection year. Previous molecular studies from Myanmar appear in insets; molecular studies from neighbouring countries appear on the country-wide map. Locations of villages forcibly displaced between 2008–2011 are indicated by red shading. See manuscript text for additional information on displaced villages, and Additional file1 for a complete list of molecular studies and abstracted prevalence estimates.