Short term oral cefixime therapy for treatment of bacterial conjunctivitis

Background. There have been few controlled studies evaluating treatment of bacterial conjunctivitis beyond the newborn period. Topical therapy of bacterial conjunctivitis achieves a clinical cure but does not prevent acute otitis media (AOM). Objectives. The aim of this study was to compare systemic antibiotic therapy (cefixime) with topical therapy with polymyxin-bacitracin for treatment of acute bacterial conjunctivitis with regard to clinical and bacteriologic cure and prevention of AOM. Methods. This study was a randomized, double blind, placebo-controlled trial of polymyxin-bacitracin ointment and oral placebo vs. topical placebo and oral cefixime in children with presumed acute bacterial conjunctivitis. Topical therapy was administered for 7 days; oral therapy was administered for 3 days. Bacterial cultures were obtained at entry and on Day 3 of treatment. Children were examined on Days 3 and 10 or if they worsened within 15 days of entry. Results. Eighty children were enrolled in the study. Bacterial cultures of the conjunctiva were positive in 70% of children: Haemophilus influenzae (53.7%); Streptococcus pneumoniae (13.8%); H. influenzae and S. pneumoniae (1.2%); and Moraxella catarrhalis (1.3%). There were 7 (17.5%) bacteriologic failures among children receiving topical antibiotic and oral placebo and 15 (37.5%) bacteriologic failures among children receiving topical placebo and oral cefixime (P = 0.07 with Yates correction). There was no difference between study groups with regard to either clinical cure or the development of AOM. Nine children(11%), 5 who received active topical therapy and 4 who received active oral drug, developed AOM either during or within 15 days of study entry. Conclusion. Cefixime was not more effective than topical polymyxin-bacitracin in either the eradication of conjunctival colonization with respiratory pathogens or the prevention of AOM in children with acute bacterial conjunctivitis.