👉 Infection begins with the entry of pathogens, such as bacteria, viruses, or fungi, into the body. This can occur through various routes including inhalation, ingestion, skin contact, or vector bites. Once inside, these microorganisms must evade or overcome the body's initial defenses, like the immune system's physical barriers and chemical responses. If the pathogen successfully bypasses these defenses, it can multiply and spread, leading to infection. The severity of the infection depends on factors such as the type of pathogen, the site of entry, and the host's immune status. Early intervention with antibiotics or antiviral treatments can help control the infection before it progresses.
