A50.04

Clinical Causes: Transmission of *Treponema pallidum* bacterium from an infected mother to her baby during pregnancy (antenatal transmission). Exposure during childbirth, especially if the birth occurs when the mother has active syphilis. Absence of prenatal syphilis testing or treatment, increasing the risk of congenital infection.

Key Symptoms: Respiratory distress, including rapid breathing and difficulty breathing. Persistent cough or wheezing. Fever and irritability in the newborn. Enlarged liver and spleen (hepatosplenomegaly). Skin rashes or lesions associated with syphilis. Poor feeding and failure to thrive. In some cases, conjunctivitis or eye abnormalities.

Diagnosis Path: Diagnosis of early congenital syphilitic pneumonia involves a combination of clinical evaluation and laboratory testing: - Physical examination noting respiratory and systemic signs. - Serologic tests for syphilis in the infant, such as nontreponemal and treponemal tests. - Microbiological tests, if applicable. - Chest X-ray imaging revealing characteristic pulmonary infiltrates. - Additional assessments may include checking for other signs of congenital syphilis, such as skin lesions or skeletal abnormalities. - Confirming maternal history of syphilis infection can also aid in diagnosis.

Treatment Protocols: Treatment focuses on eradicating the infection and managing respiratory symptoms: - Antibiotic therapy, primarily with penicillin, which is effective in treating congenital syphilis. - Supportive care for respiratory distress, including oxygen therapy if needed. - Monitoring for potential complications like pneumothorax or lung abscess. - Follow-up testing to ensure complete resolution of infection. - Coordination with infectious disease specialists and pediatricians is essential for comprehensive care.