Emerging diagnostic tools harness AI, nanotechnology, and advanced materials to improve disease detection and patient care. Technologies include an AI-powered nanopore viral detection platform enabling rapid infection diagnostics, a novel breathalyzer sensor differentiating methanol poisoning, and a telehealth program enhancing geriatric cancer care in under-resourced areas. Additionally, developments in microneedle-based vaccine delivery and real-time pathogen genomic sequencing further exemplify strides toward personalized and accessible healthcare solutions.