Acute Infections Caus ed by Sus ceptible Strains of Ps eudomonas aeruginosaPolymyxin B sulfate is a drug of choice in the treatment of infections of the urinary tract, meninges, and bloodstream caused by susceptible strains of Ps. aeruginosa. It may also be used topically andsubconjunctivally in the treatment of infections of the eye caused by susceptible strains of Ps.aeruginosa. It may be indicated in serious infections caused by susceptible strains of the followingorganisms, when less potentially toxic drugs are ineffective or contraindicated:H influenzae, specifically meningeal infections.Escherichia coli, specifically urinary tract infections.Aerobacter aerogenes, specifically bacteremia.