What is the appropriate treatment for a newborn presenting with conjunctivitis secondary to Chlamydia trachomatis?

In cases of conjunctivitis in newborns caused by Chlamydia trachomatis, the most appropriate treatment is oral erythromycin. Chlamydia is one of the leading infectious causes of conjunctivitis in infants, particularly when the condition presents within the first few weeks of life. Erythromycin is effective against this organism as it targets the bacterial infection systemically.

Using oral erythromycin is essential because it not only treats the conjunctivitis but also addresses potential systemic infection in the infant. Chlamydia can be associated with pneumonia in newborns, and oral treatment allows for adequate systemic absorption to prevent or treat any underlying infections.

While topical tetracycline is sometimes utilized for other conjunctival infections, it is insufficient for treating Chlamydial infections effectively, as it does not penetrate systematically. Intravenous antibiotics are not typically required for uncomplicated conjunctivitis, and delaying treatment would pose risks of complications, including potential long-term effects on vision or systemic infection. Thus, initiating treatment with oral erythromycin is critical in managing this condition effectively.