A study has shown the AstraZeneca vaccine offers less protection against the variant of novel coronavirus first identified in South Africa.
The UN health agency issued its guidance on Wednesday noting a study showing the limited effectiveness was against mild versions of COVID-19.
But there is no evidence to suggest the vaccine doesn't safeguard against severe disease.
And you can keep up-to-date of the latest information about the corona virus in your language at sbs.com.au/coronavirus