A 5-week-old male infant presents with staccato cough and tachypnea for 2 weeks. Vital signs show HR 160 bpm, RR 52/min, BP 85/55 mmHg, temp 37.2°C, SpO2 88% on room air. He feeds well without vomiting. Bilateral conjunctival injection is noted; fever is absent. Chest radiograph demonstrates hyperinflation with diffuse bilateral interstitial infiltrates. Serum IgM is elevated. Which organism most likely caused this pneumonia?
- A)Legionella pneumophila
- B)Respiratory syncytial virus
- C)Bordetella pertussis
- D)Chlamydia trachomatisGABARITO
- E)Group B Streptococcus
Explicação
Chlamydia trachomatis is correct. Neonates exposed during vaginal delivery may develop conjunctivitis followed weeks later by an afebrile staccato cough pneumonia with diffuse interstitial infiltrates. This intracellular bacterium lacks classic peptidoglycan a... Ver explicação completa e trilha adaptativa →