Fig. 2From: Finding inhabited settlements and tracking vaccination progress: the application of satellite imagery analysis to guide the immunization response to confirmation of previously-undetected, ongoing endemic wild poliovirus transmission in Borno State, NigeriaBefore (a) (26 February 2016, WorldView02) and after (b) (29 January 2017, WorldView01) images of a settlement destroyed by fire in Kala Balge LGA (image copyright DigitalGlobe)Back to article page