Review Question - QID 213700

An 8-year-old boy presents to the emergency department with an 8-hour history of fever and difficulty breathing. His past medical history is significant for recurrent pneumonia, shortness of breath, and diarrhea as an infant. His family recently immigrated to the United States and have not yet obtained their previous medical records. On presentation, his temperature is 101.6°F (38.7°C), blood pressure is 106/68 mmHg, pulse is 98/min, and respirations are 22/min. Physical exam reveals an ill-appearing boy with increased work of breathing and scattered rhonchi over both lungs fields. Sputum Gram stain and culture reveal a gram-negative, encapsulated bacteria that produces a blue-green pigment. Which of the following is most likely associated with the cause of this patient's disorder?