Polymicrobial community-acquired pneumonia: Coinfection with tuberculosis, Klebsiella and Staphylococcus

Abstract A 71-year-old male a chronic smoker, who also had diabetes mellitus and hypertension presented with complaints of fever, cough with foul-smelling sputum and dyspnoea for 25 days. Coarse crepitations were evident in the interscapular area, infrascapular, axillary, infra-axillary and mammary areas on the left side. Contrast-enhanced computed tomography of the chest showed necrotic mediastinal lymph nodes and areas of consolidation in the left upper lobe. Bronchoalveolar lavage fluid polymerase chain reaction identified Staphylococcus , New Delhi metallo-β-lactamase (NDM) producing Klebsiella ; GeneXpert detected Mycobacterium tuberculosis complex. Pleural fluid analysis was suggestive of exudative effusion with elevated adenosine deaminase. The patient was managed with anti-tuberculosis treatment, ceftazidime-avibactam, aztreonam and linezolid.