Fig. 1From: Preponderance of vaccine-preventable diseases hotspots in northern Ghana: a spatial and space-time clustering analysis from 2010 to 2014 Choropleths showing the incidence and clustering of measles in the study area (A) A choropleth of measles incidence in the study area (2010–2014); (B) Measles cluster map: this choropleth shows the top 5 most likely spatial measles cluster in the study area. Four (4) clusters (1,2,3 and 4) are hotspots (red) whiles a single cluster (5) is a cold spot (blue)Back to article page