Abstract

Chlamydia trachomatis (Ct) was isolated from eyes of 33 out of 160 infants with neonatal conjunctivitis. In nineteen (58%) of the infants with chlamydial conjunctivitis Ct could also be isolated from the nasopharynx. All infants were treated with oral erythromycin ethylsuccinate 25 mg/kg every 12 hours for 14 days combined with lid hygiene. All were clinically cured, and none had a relapse of clinical Ct conjunctivitis during an observation period of one year. However, one infant had persistent asymptomatic chlamydial eye infection, two displayed a persistent infection of the nasopharynx, and one infant's vagina was infected despite therapy. Serum IgG antibodies to Ct were significantly more often detected in clinical cases (90%) than in controls (33%) (p less than 0.01). Infants with conjunctivitis developed detectable IgM antibodies to Ct in 43% as compared to 7% in controls (p less than 0.01).

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