COVID-19 vaccine booster dose needed to achieve Omicron-specific neutralisation in nursing home residents oleh David H. Canaday, Oladayo A. Oyebanji, Elizabeth White, Debbie Keresztesy, Michael Payne, Dennis Wilk, Lenore Carias, Htin Aung, Kerri St. Denis, Maegan L. Sheehan, Sarah D. Berry, Cheryl M. Cameron, Mark J. Cameron, Brigid M. Wilson, Alejandro B. Balazs, Christopher L. King, Stefan Gravenstein