védoltást

Védoltást, also known as vaccination, is a method of providing immunity to a particular infectious disease. It typically involves introducing a weakened or inactivated form of a pathogen, or a component of it, into the body. This triggers the immune system to recognize the pathogen as foreign and develop defenses, such as antibodies, without causing the disease itself.

Upon subsequent exposure to the actual pathogen, the body's immune system is prepared to fight it off quickly and effectively, preventing or significantly reducing the severity of the illness. This process is a cornerstone of public health, contributing to the control and eradication of many historically devastating diseases.

Vaccination programs are implemented globally to protect individuals and communities from infectious agents. The effectiveness and safety of vaccines are rigorously tested through clinical trials before they are approved for public use. Ongoing monitoring ensures their continued safety and efficacy. Different vaccines exist for a wide range of diseases, including measles, polio, influenza, and COVID-19. The development of new vaccines continues to be an active area of research.