Question

the ghon focus is associated with a pulmonary infection whose is etiology is a: mycobacterium species staphylococcus species streptococcus species klebsiella species

Explanation:

A Ghon focus is a lesion seen in primary tuberculosis. Tuberculosis is caused by Mycobacterium tuberculosis. Staphylococcus species cause conditions like skin infections, abscesses. Streptococcus species are associated with strep throat, pneumonia (but not the typical cause of the Ghon focus - related primary TB). Klebsiella species are known for causing pneumonia (especially in certain at - risk populations like alcoholics) but not primary tuberculosis.

Answer:

Mycobacterium species