Much of the world has pinned its hopes on a vaccine as a way out of the Covid-19 pandemic that has infected more than 15 million and killed more than 630,000 people globally.
Coronavirus vaccine: The first Phase 3 vaccine trial in the US is expected to begin next week
More Stories
Brazil rolls out COVID-19 vaccination plan
First Pfizer COVID-19 vaccine shipments to be delivered to US distribution sites starting Monday
CDC advisory panel recommends Covid-19 vaccine for people 16 and over