Autopsy of a 23-year-old male victim of a motor vehicle accident reveals a small cluster of caseating granulomas in the right lung just above the interlobar fissure and similar granulomas in the hilar lymph nodes. Acid-fast staining demonstrates acid-fast bacilli within these lesions. No other lesions were found in the remaining organs and systems. Which of the following is the MOST accurate interpretation of these findings?