Abstract
Baccidal was given to 31 patients with otits media and to 20 patients with sinusitis. It was effective in 77.4% of those with otits media and in 85.0% of those with sinusitis. The principal bacteria of otitis media were Staphylococcus aureus and Pseudomonas aerugiosa. It is of interest that the efficacy rate against P. aeruginosa was very high. No severe side iffects were noted except for nausea in one patient with otitis media. These results indicate that Baccidal is a useful antibacterial agent in the treatment of otitis media and sinusitis.