Specific infections are illnesses caused by particular pathogens, such as bacteria, viruses, fungi, or parasites. These infections can affect various parts of the body and often have distinct symptoms. For example, influenza is a viral infection that primarily affects the respiratory system, while strep throat is caused by a bacterial infection in the throat. Diagnosis of specific infections typically involves medical tests, such as blood tests or cultures, to identify the causative agent. Treatment may include antibiotics for bacterial infections or antivirals for viral infections. Early detection and appropriate treatment are crucial for effective recovery.