H1N1 Influenza Virus Particles (image) PLOS Share Print E-Mail Caption This image shows H1N1 influenza virus particles. Credit NIAID, Flickr Usage Restrictions Must re-use the image credit. 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.