South Africa suspends Oxford vaccine after trial data showed it offered only limited protection against variant; US herd immunity by end of summer ‘very difficult’, says Biden
- Vaccine strategy needs rethink after resistant variants emerge, say scientists
- When will Britain’s Covid lockdown be lifted? Three scenarios
- Freedom and fairness: vaccine passport plans cause global unease
- ‘Another wave is possible’: Paris braces for UK variant
- Mexico’s vaccine program sees disastrous launch
Hello everyone. I am taking over the live blog from London, where it’s 7.20 am GMT. Please get in touch with me to share news tips or comments while I work.
Twitter: @sloumarsh
Instagram: sarah_marsh_journalist
Email: sarah.marsh@theguardian.com
I’ll be handing over to my colleagues in London shortly, but first, here’s a summary of the day so far.
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