The Annual Review of Virology communicates exciting advances in our understanding of viruses of animals, plants, bacteria, archaea, fungi, and protozoa. Reviews highlight new ideas and directions in basic virology, viral disease mechanisms, virus-host interactions, and cellular and immune responses to virus infection, and reinforce the position of viruses as uniquely powerful probes of cellular function.The Annual Review of Virology debuted in the 2016 Release of the Journal Citation Report (JCR) with an Impact Factor of 3.345.