Good point. One of the recent Duke Startup Challenge winners was a company called Nanoly, which is developing a nanoparticle shield for vaccines, so that they c

Good point. One of the recent Duke Startup Challenge winners was a company called Nanoly, which is developing a nanoparticle shield for vaccines, so that they can be delivered without refrigeration and safely. According to their website, they are careful to mention that they are using non-toxic nanoparticles, which makes sense as their work is health-centric.