A new antibody shot, called Lyme PREP, is being developed to prevent Lyme disease infection after a tick bite. The shot works by delivering antibodies that neutralize the Lyme microbe, stopping it from spreading to the bloodstream. Lyme disease is a growing concern, with cases rising sharply over the past decade, and current treatments often failing to fully eliminate the infection. The new shot aims to provide a preventative measure, especially for people living in high-risk areas.