Consider the following medical report that includes the patient's historical health records. Use it to predict the disease that the patient is high likely exposed to. 

 Medical Report: reason for exam: 83-year-old man with past medical history significant for hypertension, diastolic chf, status post right total knee replacement complicated by septic joint, status post washout and right gastrocnemius knee graft, transferred to micu overnight for hypoxia. technique: chest mdct was performed without contrast using 5-mm and 1.25-mm axial sized thickness. coronal and sagittal reformations were also obtained. findings: no prior study for comparison. correlation was made with multiple prior chest x-rays. multifocal bilateral mostly perihilar and dependent areas of ground-glass opacity and septal thickening are associated with focal dense areas of peripheral consolidation in both upper lobes. small bilateral pleural effusions are layering. pericardial effusion is tiny. anemia is suggested by relative hypodensity of intracardiac blood. upper lobe predominant emphysema is present. the right middle lobe is relatively spared from multifocal parenchymal opacities and some normal intervening lung is between areas of parenchymal abnormalities. aortic valvular calcifications are mild. coronary artery calcifications are severe. mediastinal lymph nodes are scattered, up to 10 mm in the lower right paratracheal region. other lymph nodes are not enlarged using ct criteria. the main pulmonary artery is enlarged up to 3.5 cm, suggesting pulmonary hypertension. the trachea has a saber-sheath appearance at the thoracic inlet. tiny punctate densities are in both bases, could be dystrophic calcification, calcified granuloma or aspirated barium. (over) 1:38 pm ct chest w/o contrast clip # reason: ? etiology admitting diagnosis: knee infection ______________________________________________________________________________ final report (cont) this study was not tailored for subdiaphragmatic evaluation except to note incompletely evaluated left kidney cyst and right kidney hypodensity, too small to characterize. there is no bone lesion suspicious for malignancy. degenerative changes are multilevel. impression: 1. multifocal bilateral mostly perihilar and dependent ground-glass opacity and septal thickening with normal intervening lung and relatively spared right middle lobe, favoring widespread aspiration with possible developing ards. interstitial edema is less likely due to sparing of the right middle lobe and areas of normal lung. hemorrhage is also less likely, given the clinical context. 2. small bilateral pleural effusions. tiny pericardial effusion. 3. upper lobe predominant emphysema. 4. signs of anemia. 5. severe coronary artery calcifications. mild aortic valvular calcifications. 6. left kidney cyst and kidney hypodensity, too small to characterize, could be evaluated by ultrasound after the acute event if clinically relevant. 7. signs of pulmonary hypertension. 8. saber-sheath trachea. procedure: venous catheterization, not elsewhere classified continuous invasive mechanical ventilation for 96 consecutive hours or more parenteral infusion of concentrated nutritional substances insertion of endotracheal tube enteral infusion of concentrated nutritional substances percutaneous [endoscopic] gastrostomy [peg] temporary tracheostomy graft of muscle or fascia attachment of pedicle or flap graft to other sites excisional debridement of wound, infection, or burn excisional debridement of wound, infection, or burn onychoplasty mobilization of other joints revision of total knee replacement, tibial insert (liner) diagnoses: urinary tract infection, site not specified congestive heart failure, unspecified acute posthemorrhagic anemia acute kidney failure, unspecified severe sepsis methicillin susceptible staphylococcus aureus septicemia acute respiratory failure pneumonitis due to inhalation of food or vomitus septic shock other respiratory complications pressure ulcer, lower back acute diastolic heart failure hyperosmolality and/or hypernatremia pressure ulcer, unspecified stage infection and inflammatory reaction due to internal joint prosthesis 

Answer: The patient is high likely exposed to