👉 Infection refers to the process by which a pathogen, such as a bacterium, virus, fungus, or parasite, enters and establishes itself within a host organism, leading to disease. This can occur through various routes, including inhalation, ingestion, or direct contact. Once inside, the pathogen can multiply and cause harm by disrupting normal cellular functions, triggering immune responses, or producing toxins. Key roles in infection include pathogens themselves, which have specialized mechanisms for attachment, invasion, replication, and evasion of host defenses. Additionally, healthcare workers, laboratory technicians, and public health officials play crucial jobs in managing infections. Healthcare workers diagnose and treat infections, while laboratory technicians identify pathogens through testing. Public health officials monitor outbreaks, implement control measures, and educate communities to prevent the spread of infectious diseases.
