A case report of AIDS complicated by and mixed pulmonary infection identified via metagenomic next-generation sequencing.

is a Gram-positive bacterium that is rarely encountered in clinical practice. It primarily affects the digestive and nervous systems, with pulmonary infections being infrequently reported. This case report describes a patient with HIV/AIDS who developed a mixed pulmonary infection involving and . The diagnosis was confirmed via metagenomic next-generation sequencing (mNGS) of bronchoalveolar lavage fluid obtained through bronchoscopy. Following appropriate treatment, the patient's symptoms and pulmonary imaging findings showed marked improvement.