Spectrum of infectious diseases and treatment outcomes in tertiary care hospitals.

Abstract

The spectrum of infectious diseases encountered in tertiary care hospitals is broad and reflects the complexity of cases referred from primary and secondary healthcare facilities. These hospitals manage severe, complicated, and treatment-resistant infections, including bacterial, viral, fungal, and parasitic diseases, often affecting patients with multiple comorbidities or compromised immune systems. Common bacterial infections include sepsis, hospital-acquired and ventilator-associated pneumonia, bloodstream infections, complicated urinary tract infections, and surgical site infections, frequently caused by multidrug-resistant organisms such as methicillin-resistant Staphylococcus aureus, extended-spectrum beta-lactamase–producing Enterobacter ales, and carbapenem-resistant pathogens. Viral infections managed in tertiary care settings include severe influenza, viral hepatitis, HIV-related opportunistic infections, and emerging or re-emerging viral diseases, while invasive fungal infections such as candidemia and aspergillosis are increasingly reported among critically ill and immunosuppressed patients. Parasitic infections, though less common, may present with severe manifestations in endemic regions or in immunocompromised individuals.