We thank the reviewer for pointing out the inaccuracy in the references. The statement "...IFITM3 elevates the level of cholesterol on late endosomes and lysosomes thereby restricting early IAV infection" is based on the publication of Kühnl et al. 2018 (mBio). The reference was replaced. We have also complemented the introductory part with the aspect of fusion inhibition through the amphipathic helix of IFITM3.
If this is not acceptable we will make the changes in final revision.