%0 Journal Article %A Greg Basky %A Lauren Vogel %T XE, XD & XF: what to know about the Omicron hybrid variants %D 2022 %R 10.1503/cmaj.1095998 %J Canadian Medical Association Journal %P E654-E655 %V 194 %N 18 %U https://www.cmaj.ca/content/cmaj/194/18/E654.full.pdf