Fig. 2

Trends in the proportion of hospitalization in intensive care units during the study period among malaria cases reported in Ile-de-France, 2000–20,013, by month, according to age group. The number reported above the curve is the observed proportion for each period (Period 1: 2000–2003, Period 2: 2004–2008, Period 3: 2009–2013). The figure shows the proportion of patients with malaria cases hospitalized in ICU, by month, among cases reported to the CNR between January 1st, 2000 and December 31, 2013 (black lines), smoothed with a 2^° polynomial regression line (red lines), in adults (a) and pediatric cases (b). Dotted red lines represent limits between the three study periods. Proportions are specified for each period