👉 Infection, particularly from pathogens like bacteria or viruses, occurs when these microorganisms enter a host and begin to multiply, often causing disease. This process can be facilitated by various factors, including breaches in the body's physical barriers, such as cuts or mucous membranes, or through vectors like insects. Once inside, pathogens can invade tissues, evade the immune system, and cause harm, leading to infection. The body's immune response is crucial in fighting these invaders, but if the infection is severe or the host's defenses are compromised, it can result in illness or disease. Understanding the mechanisms of infection is vital for developing preventive measures and treatments, such as vaccines and antibiotics, to protect against and manage infectious diseases.
