Nature Reviews Microbiology (2018) https://doi.org/10.1038/s41579-018-0115-z Published online 28 November 2018

In Figure 4, seasonal influenza virus was erroneously indicated as having “HA α2-3 SA preference” instead of “HA drift from population immunity” to represent ongoing evolution of seasonal influenza virus. This has now been corrected in all versions of the Review. The publisher apologizes to the authors and to readers for this error.