👉 Infection is a biological process where pathogens, such as bacteria, viruses, fungi, or parasites, invade and multiply within a host organism, causing disease. This invasion can occur through various routes, including inhalation, ingestion, skin contact, or vector-borne transmission. Once inside the body, pathogens disrupt normal cellular functions, leading to inflammation, tissue damage, and the manifestation of symptoms. The immune system responds by mounting an attack, but if the infection is severe or the host's defenses are compromised, it can result in systemic illness. Effective prevention and treatment strategies, such as antibiotics for bacterial infections, antivirals for viral infections, and supportive care, are crucial in managing infections and minimizing their impact on health.
