Zika Virus and IFITM3 (IMAGE) UMass Chan Medical School Caption IFITM3 blocks Zika virus infection. When human cells are exposed to Zika virus they are overwhelming infected, as seen by the large number of green cells (left panel). When IFITM3 levels were boosted in these cells, the same amount of virus was prevented from replicating (right panel). Credit Brass Lab Usage Restrictions Credit UMass Medical School 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.