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. 2015 Apr 14;9(4):e0003511. doi: 10.1371/journal.pntd.0003511

Fig 1. Number of counts per country available from online WHO sources: 1955–2012.

Fig 1

A count was defined as a reported value for an indicator, e.g. the reported number of cases for one month and location would be one count. The number of counts available per country (indicated in different colors) was determined by the spatiotemporal resolution of data, the number of indicators reported, and the length of the time period reported.