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A critical leap in immunization strategies involves optimizing how antigens reach immune cells, and novel vaccine delivery systems are making this possible. Nanoparticles, microneedles, viral-like particles, and lipid-based carriers are among the innovative platforms reshaping delivery routes. These technologies offer enhanced stability, targeted cellular uptake, and controlled antigen release—minimizing dosage while maximizing immune activation. Intranasal, oral, and transdermal methods are being refined to improve patient compliance and eliminate the need for cold chain logistics. Researchers are also investigating self-amplifying RNA and implantable delivery devices for long-lasting immunity. The convergence of materials science and immunology is creating systems that go beyond injection-based models, with implications for both human and veterinary medicine. As regulatory bodies adapt to these innovations, Novel Vaccine Delivery Systems are poised to redefine the speed, accessibility, and efficacy of global immunization programs.