Researchers have developed a novel method of vaccine delivery using dental floss, which could potentially replace traditional needle-based vaccinations. In recent studies, vaccine-laced dental floss was tested on 50 mice, with the flossing administered every two weeks over a 28-day period. This technique successfully delivered vaccines by gently flossing the gums, resulting in immune responses that may protect against influenza and other infections such as Strep A. Scientists observed the production of antibodies in humans for the first time, demonstrating how these antibodies could prevent infections. This approach could transform immunization practices by providing a needle-free alternative through routine dental hygiene.