User:Vincent.yan/sandbox

Chitosan is also being researched as a potent intranasal vaccine delivery method, reinforced using chitosan as an adjuvant that increases immunological response. It is advantageous in that vaccine delivery is facilitated nasally, and can potentially render intravenous injections obsolete. Research and development is put into creating an adjuvant that alleviates hazards, including experiencing immunological responses and toxicity to vaccines delivered nasally, which hinders development for chitosan as a promising intranasal vaccine delivery method.