▁( the ▁latter ▁significantly ▁v ected ▁by ▁the ▁British ▁Indian ▁Army ▁soldiers ▁station ed ▁in ▁Bus he hr ). ▁The ▁rural ▁areas ▁were ▁more ▁affected ▁than ▁urban ▁regions , ▁in ▁which ▁as ▁many ▁as ▁ 2 0 % ▁of ▁the ▁people ▁were ▁reported ▁to ▁have ▁died . ▁Az izi ▁et ▁al ▁comment ▁that ▁the ▁figure ▁is ▁ex agger ated , ▁adding ▁that ▁the ▁mort ality ▁rate ▁in ▁K erm ans h ah ▁and ▁Te h ran ▁was ▁about ▁ 1 %. ▁Af k ham i ▁states ▁that ▁the ▁flu ▁impact ▁was ▁enorm ous ▁and ▁estimates ▁that ▁between ▁ 9 0 2 , 4 0 0 ▁and ▁ 2 , 4 3 1 , 0 0 0 ▁or ▁ 8 . 0 % ▁and ▁ 2 1 . 7 % ▁of ▁the ▁total ▁population ▁died , ▁making ▁Iran ▁one ▁of ▁the ▁most ▁dev ast ated ▁countries ▁world wide . ▁F loor ▁assumes ▁the ▁figure ▁estimated ▁by ▁Af k ham i ▁is ▁much ▁higher ▁than ▁the ▁real ▁cas ual ties . ▁ ▁Ch ol era ▁ ▁In ▁ 1 9 1 6 , ▁ch ol era ▁that ▁hit ▁A zer ba ij an ▁in ▁ 1 9 1 5 , ▁was ▁w ides p read ▁not ▁only ▁in ▁all ▁northern ▁provinces , ▁it ▁also ▁reached ▁the ▁south . ▁In ▁ 1 9 1 7 , ▁it ▁appeared ▁in ▁Maz and aran ▁and ▁K hor as an , ▁killing ▁ 1 8 8 ▁and ▁ 3 0 8 ▁people ▁in ▁the ▁two ▁regions ▁respectively , ▁according