altogether haemophilus influenzae a virus were noted in 9.5 % , respectively , mycoplasma pneumoniae in 5.4 % , legionnaires ' disease in 2.7 % and branhamella catarrhalis in 2.0 % , whereas enteric gram-negative bacilli as aetiological organisms were not found in any patient .
C0042776
virus
C0029235
organisms