Top news
South Africa suspends AstraZeneca vaccine drive
By Sylvia Hui & Andrew Meldrum
Oxford Covid vaccine almost as effective against Kent variant, trials suggest
By Ian Sample
India, South Africa bid to ban vaccine patents blocked
By Ashutosh Pandey
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Not recommending AstraZeneca vaccine for the elderly risks the lives of the most vulnerable
By Jonathan Pugh & Julian Savulescu
Western countries have 'hoarded' Covid vaccines. Africa is being left behind as cases surge
By Eoin McSweeney & Nyasha Chingono
Vaccines vs variants: the race to immunise the developing world
By Stephanie Findlay, Bryan Harris & David Pilling
How AstraZeneca's vaccine was hit by flawed trials, defects and politics — but might still save the world
By Sarah Neville, Hannah Kuchler & Anna Gross
Covid: WHO backs Oxford vaccine 'even if variants present'
By James Gallagher