Fig. 1

Particulate matter (PM) and bioaerosol concentrations at different sampling sites (all units are in µg/m3 except bioaerosol concentration which is in CFU/m3). Here, I1 & I2 = Bangabandhu Sheikh Mujib Medical University Hospital (BSMMUH), I3 & I4 = Khwaja Badrudduja Modern Hospital (KBMH), I5 & I6 = Dhaka Medical College Hospital (DMCH), I7 & I8 = Monno Medical College Hospital (MMCH), I9 = Green Model Town (GMT), I10 = Mukarram Hussain Khundker Bhaban (MHKB).