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Microneedle fabrication was conceptualized in the 1970s as devices for painless transdermal drug delivery. The last two decades have seen considerable research and financial investment in this area with SARS-CoV-2 and other vaccines catalyzing their application to in vivo intradermal vaccine delivery. Microneedle arrays have been fabricated in different shapes, geometries, formats, and out of different materials. The recent pandemic has offered microneedle platforms the opportunity to be employed as a vehicle for SARS-CoV-2 vaccine administration. Various modes of vaccination delivery and the potential of microneedle array-based vaccines will be presented, with a specific focus placed on recent SARS-CoV-2 research. The advantages of microneedle-based vaccine administration, in addition to the major hurdles to their en masse implementation, will be examined. Considering the widely acknowledged disadvantages of current vaccine delivery, such as anxiety, pain, and the requirement for professional administration, a large shift in this research sphere is imminent. The SARS-CoV-2 pandemic has catalyzed the development of alternate vaccination platforms, working to avoid the requirement for mass vaccination centers. As microneedle vaccine patches are transitioning through clinical study phases, research will be required to prepare this technology for a more mass production environment.

Microneedle technology for potential SARS-CoV-2 vaccine delivery