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Numbers of WBC, lymphocytes, and monocytes in patients before, during and after Covid-19 infection. Results are presented in box plots indicating the median as the horizontal line, 25th-75th percentiles as the group distributions represented as boxes, and 2.5--97.5% cumulative frequencies as shown as whiskers. Outliners [identified by the 1.5 x inter-quartile range (IQR) criterion] are plotted as empty squares. * represents p<0.05 and ** represents p<0,01.
