As of April 8, 2020, CEPI reports 115 vaccine candidates are in varying stages of development, 78 of which are confirmed as active and 37 are unconfirmed. To end the COVID-19 Pandemic safe and effective vaccines will be required for the entire global population. Estimated requirement: 5 billion doses.
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GOV UK | SAGE | How long will vaccines continue to protect against COVID?
Reviewed by SAGE. meetings, July 2021 Executive summary 1. It is highly likely that vaccine induced immunity to SARS-CoV-2 infection, and potentially severe disease (but probably to a lesser extent) [...]