among the antibiotics used , ceftriaxone proved to be highly active under conditions simulating pulmonary infections and septicemias caused by streptococcus pneumoniae ( bacteria grown in bronchoalveolar fluid or blood ; antibiotic concentrations varying with time as in human bronchial secretions or blood ) and under conditions simulating blood and urinary infections caused by escherichia coli ( bacteria grown in human blood or urine ; antibiotic concentrations varying as in the various fluids ) .
C0007561
ceftriaxone
C0042029
urinary infections