F.O.I. Request Pfizer's COVID-19 Vaccine Contract with Canada. October 26, 2020, page 18, it states: the "Purchaser further acknowledges that the long-term effects and efficacy of the Vaccine are not currently known...
6G and Beyond: The Future of Wireless Communications Systems - INTERNET OF BioNanoThings FOR HEALTH APPLICATIONS IAN F. AKYILDIZ , (Fellow, IEEE), Broadband Wireless Networking Laboratory, School of Electrical and Computer Engineering, Georgia Institute