tilläggsvaccination

Tilläggsvaccination, often referred to as a booster vaccination, is an additional dose of a vaccine administered after the initial vaccination series. The primary purpose of a tilläggsvaccination is to restore or enhance the immune system's protection against a specific disease. Over time, the immunity developed from the initial vaccine can wane, meaning the body's ability to fight off the pathogen decreases. A booster dose "reminds" the immune system of the pathogen, prompting it to produce a stronger and more durable immune response.

Tilläggsvaccinationer are crucial for maintaining long-term protection, especially for diseases where immunity naturally fades or where new strains of the pathogen emerge. They are recommended for various vaccines, including those for tetanus, diphtheria, pertussis (whooping cough), and certain viral infections like influenza and COVID-19. The specific timing and number of booster doses required depend on the vaccine, the individual's age, health status, and the prevalence of the disease in the community. Public health authorities often issue guidelines for recommended booster schedules to ensure optimal protection for the population.