Which two endemic fungi have a high prevalence in the Americas and cause significant lung disease?

Which two endemic fungi have a high prevalence in the Americas and cause significant lung disease?

• A. Aspergillus fumigatus and Histoplasma capsulatum
• B. Histoplasma capsulatum and Blastomyces dermatitidis
• C. Coccidioides spp. and Paracoccidioides brasiliensis
• D. Histoplasma capsulatum and Coccidioides spp.

Answer: (D)

Endemic fungi with high prevalence in the Americas that cause significant lung disease are Histoplasma capsulatum and Coccidioides species. Histoplasma is common across the Americas, especially in areas with bird or bat droppings, and causes histoplasmosis that often presents as pulmonary illness, ranging from mild symptoms to pneumonia, with potential lung calcifications. Coccidioides is endemic to arid regions of the Americas (notably the southwestern U.S. and parts of Mexico and Central/South America) and leads to coccidioidomycosis, typically presenting with fever, cough, and chest pain, and can disseminate in some cases. Together they represent two classic, region-wide pulmonary pathogens in the Americas. The other options pair fungi that are either not consistently endemic across the Americas or not both primarily associated with lung disease in the same broad geographic pattern.

Endemic fungi with high prevalence in the Americas that cause significant lung disease are Histoplasma capsulatum and Coccidioides species. Histoplasma is common across the Americas, especially in areas with bird or bat droppings, and causes histoplasmosis that often presents as pulmonary illness, ranging from mild symptoms to pneumonia, with potential lung calcifications. Coccidioides is endemic to arid regions of the Americas (notably the southwestern U.S. and parts of Mexico and Central/South America) and leads to coccidioidomycosis, typically presenting with fever, cough, and chest pain, and can disseminate in some cases. Together they represent two classic, region-wide pulmonary pathogens in the Americas. The other options pair fungi that are either not consistently endemic across the Americas or not both primarily associated with lung disease in the same broad geographic pattern.