Dr Joanna Groom and Ms Amania Sheikh (IMAGE) Walter and Eliza Hall Institute Caption Walter and Eliza Hall Institute researchers Dr Joanna Groom (R) and Ms Amania Sheikh (L) have led research identifying a molecular switch that impacts immune responses to viral infections, and whether or not protective antibodies are produced. Their findings could lead to better strategies to develop vaccines for previously hard-to-prevent viruses. Credit Walter and Eliza Hall Institute, Australia Usage Restrictions With credit License Licensed content 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.