the three virus strains known to be virulent for man grew to relatively high titres of 10 ( 5.2 ) -- 10 ( 6.8 ) ebid50/ml in the turbinates of infant rats at 48 hours post-infection , and virus infection enhanced subsequent systemic infection following intranasal inoculation of rats with hib .
C0009450
infection
C0243026
systemic infection