Figure 4
From: Epidemiological characteristics of hand, foot, and mouth disease in Shandong, China, 2009–2016
Heatmap of surveillance data for HFMD by city and HFMD epidemiological region, 2009–2016. (A) HFMD epidemic curve based on the number of weekly reported cases. (B) Time series of weekly reported cases of HFMD standardized by the number of annual cases. The cities were ordered by longitude from the westernmost (top) to the easternmost (bottom). (C) Clustering analysis of seasonal distribution of HFMD cases, plotted as the median value of proportion of cases in each week of the year from 2009 to 2016. (D) Classification of the epidemiological regions by clustering analysis.
