
Polymer Protects Vaccines and Drugs Without Causing Allergic Reactions
Vaccines typically are encased in poly(ethylene glycol), or PEG, tiny spherical packages known as liposomes. In rare cases, the flexible, water-soluble polymer may cause an anaphylactic reaction in recipients, with symptoms ranging from skin irritation to nausea and, in extreme instances, unconsciousness and sudden death. Researchers at the National Institute of Advanced Industrial Science and Technology (AIST) in Japan have developed a polymer that could help deliver vaccines and drugs with a…