Infection

The entrance or invasion if the body by a disease-causing agent or microorganism (bacteria, virus, parasites) that is not normally present in the body. These agents can enter the body through cuts, foreign objects, contact with other infected objects, ingestion or inhalation. The microorganism can undergo multiplication and cause ‘disease.’ The signs of an infection can include fever, swelling and heat, redness, fatigue, pain, puss or oozing from a wound and even a bad smell.