Fig. 2

Latency periods for imported malaria cases in Hubei Province, 2014–2018. a Latency in days of cases caused by four Plasmodium species. b Latency in days of P. ovale curtisi and P. ovale wallikeri cases. The box plots show the latency period between arrival in China and illness onset. The midline of each box plot is the median, with the edges of the box representing the interquartile interval. Whiskers delineate the 5th and 95th percentiles. The black circles represent outliers of latency days. The asterisk represents the extreme of days elapsed between arrival in China and illness onset