external In the Media October 18, 2021 Anthony Santella, professor, director of the Doctorate of Health Sciences program, and COVID-19 coordinator, comments on the mixing of vaccines for travelers going to other countries. https://www.smh.com.au/world/north-america/you-re-welcome-here-astra-zeneca-mixed-doses-ok-for-entry-into-us-authorities-say-20211019-p59145.html news-all news-in-the-media year-2021 month-october