In March and April 262 publications were released about Chitosan, which mainly focused on animal and human studies, nanoparticles and pharmaceutical preparations. The most successful nations in the field of chitosan research have been: China (83 articles), India (31) and USA (22).

At the beginning of year 2013 numerous articles about chitosan and chitosan derivatives were published.  All in all 286 publications were released in January and February by leading scientists from China (86 articles), USA (25) and India (25).  The main research field addresses chitosan in animal and human studies, nanoparticles and pharmaceutical preparations.