Which of the following organisms can produce asymptomatic infection, with chronic changes of calcified hilar and mediastinal lymph nodes?

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Histoplasma capsulatum is a fungus that can cause an asymptomatic infection in the lungs, with chronic changes of calcified hilar and mediastinal lymph nodes. This is commonly referred to as histoplasmosis, and it can occur in individuals who have been exposed to the fungus, such as those who live in areas where the fungus is endemic. Asymptomatic infections with Actinomyces israelii, Pseudomonas aeruginosa, and Staphylococcus aureus are less common, and they typically do not result in the chronic changes seen with histoplasmosis.

Which of the Following Organisms Can Produce Asymptomatic Infection, with Chronic