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Comparison of three topical antimicrobials for acute bacterial conjunctivitis.

One hundred fifty-eight patients, 21 years of age or less, presenting with culture-positive (Haemophilus influenzae or Streptococcus pneumoniae) conjunctivitis were treated with trimethoprim-polymyxin B (TP), gentamicin sulfate (GS) or sodium sulfacetamide (SS) ophthalmic solution for 10 days. Clinical response at 3 to 6 days after start of therapy was similar for all test agents: 26 of 55 (47%) patients cured, 25 of 55 (45%) improved for TP; 28 of 57 (49%) cured, 26 of 57 (46%) improved for GS; and 19 of 46 (41%) cured, 22 of 46 (48%) improved for SS. Clinical response at 2 to 7 days after completion of therapy was also similar: 46 of 55 (84%) patients cured, 5 of 55 (9%) improved for TP; 50 of 57 (88%) cured, 5 of 57 (9%) improved for GS; and 41 of 46 (89%) cured, 2 of 46 (4%) improved for SS. Bacteriologic response at 2 to 7 days after completion of therapy was similar for all antimicrobials: 44 of 55 (83%) patients for TP; 39 of 57 (68%) for GS; and 33 of 46 (72%) for SS.

Administration, Topical↗

Acute bacterial conjunctivitis. Bacteriology and clinical implications.

We report the results of eye culture specimens, obtained from patients under 20 years of age, submitted to the Bacteriology Department of our institution from January 1 through April 30, 1983. A total of 72 specimens were positive for one or more strains of bacteria. The most commonly isolated bacteria was Hemophilus influenzae (34 strains, 42%), followed by Staphylococcus epidermidis (11 strains, 13.75%) and Streptococcus pneumoniae (9 strains, 11.25%). Mean age of patients with H. influenzae (excluding a 20-year-old patient) was 15 months with standard deviation of 13 months. Chloramphenicol and tetracycline showed excellent in vitro activity against bacteria of all age groups. Tetracycline may prove to be the drug of choice for the treatment of acute conjunctivitis if comparative clinical data support its in vitro superiority.

Adolescent↗

The safety and efficacy of topical norfloxacin compared with placebo in the treatment of acute, bacterial conjunctivitis. The Norfloxacin-Placebo Ocular Study Group.

Two hundred and eighty-four patients with acute conjunctivitis were enrolled in a double-masked study comparing norfloxacin ophthalmic solution with placebo. The proportion of patients who were clinically improved after 5 days treatment was 88.1% in the norfloxacin group and 71.6% in the placebo group (p less than 0.01). The proportion of patients who had all organisms eradicated, including the coagulase-negative staphylococci, after two to three days treatment was 52.7% for norfloxacin and 23.9% for placebo (p less than 0.01) and 64.7% and 26.3% (p less than 0.01) respectively when the coagulase-negative staphylococci were not included. Adverse experiences occurred in 4.2% of the patients receiving norfloxacin compared to 7.1% of the placebo patients. None of the adverse experiences was serious.

Acute Disease↗

Outbreak of bacterial conjunctivitis at a college--New Hampshire, January-March, 2002.

During February 1-14, 2002, approximately 100 students presented to a New Hampshire college's student health service with clinical signs of conjunctivitis (Figure 1). The cause of conjunctivitis was initially thought to be viral. However, because of the high number of cases, eye cultures were collected from 12 consecutive students; Streptococcus pneumoniae was isolated from cultures of all 12 students. The medical director of the student health service notified the New Hampshire Department of Health and Human Services about the outbreak and on February 22, the state health department requested assistance from CDC. This report summarizes preliminary results of the investigation of this outbreak, which indicate that an uncommon strain of pneumococcus caused this outbreak and that health-care providers should consider pneumococcus as a cause of conjunctivitis among college students.

Adolescent↗

A phase III clinical trial of 0.5% levofloxacin ophthalmic solution versus 0.3% ofloxacin ophthalmic solution for the treatment of bacterial conjunctivitis.

OBJECTIVE: To compare the efficacy and safety of 0.5% levofloxacin ophthalmic solution (QUIXIN) with 0.3% ofloxacin ophthalmic solution for the treatment of bacterial conjunctivitis. DESIGN: Prospective, randomized, active-controlled, double-masked, multicenter study. PARTICIPANTS: Four hundred twenty-three patients with a clinical diagnosis of bacterial conjunctivitis were enrolled. METHODS: Patients were randomly assigned to receive either 0.5% levofloxacin (n = 211) or 0.3% ofloxacin (n = 212) for 5 days (every 2 hours on days 1 and 2 and every 4 hours on days 3-5). Conjunctival cultures were obtained, and ocular signs and symptoms were evaluated on day 1 (baseline), days 3 to 5 (interim), and days 6 to 10 (final). End point was defined as the last evaluable observation. MAIN OUTCOME MEASURES: Primary microbial and clinical outcomes were based on culture results and resolution of cardinal signs, respectively. Secondary efficacy assessments included evaluations of ocular signs and symptoms. RESULTS: Two hundred eight patients (levofloxacin, n = 109; ofloxacin, n = 99) were evaluated for efficacy. Microbial eradication rates were significantly greater in the 0.5% levofloxacin treatment group compared with the 0.3% ofloxacin group at both the final visit (89% vs. 80%, P = 0.034) and at end point (90% vs. 81%; P = 0.038). Treatment with 0.5% levofloxacin was significantly more effective in resolving photophobia than was 0.3% ofloxacin treatment (94% vs. 73%, P = 0.006). Both study medications were well tolerated, with a low incidence of adverse events. CONCLUSIONS: Although clinical cure rates in the 0.5% levofloxacin and 0.3% ofloxacin treatment groups were similar, a 5-day treatment regimen with 0.5% levofloxacin achieved microbial eradication rates that were statistically superior to those attained with 0.3% ofloxacin. Despite the higher concentration of active drug in 0.5% levofloxacin versus 0.3% ofloxacin, there was no difference between treatment groups in the incidence of treatment-related adverse events.

Adolescent↗