Microneedle Vaccine Patch Placement (image) NIH/National Institute of Biomedical Imaging & Bioengineering Share Print E-Mail Caption Applying a dissolving microneedle patch is shown. The microneedles dissolve within minutes after insertion into skin to release encapsulated drug or vaccine. Credit Rob Felt, Georgia Tech. Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.