Countries are mixing and matching vaccines to tackle the delta variant

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A dose of the Sinovac vaccine is administered in Depok, Indonesia

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A GROWING number of countries that have been depending on vaccines developed in China are losing faith that these alone can rein in the coronavirus as they face continued surges in infections and the spread of the more transmissible delta variant.

On 1 August, Cambodia became the latest nation to approve the use of a different vaccine as a booster shot. It will administer the Oxford/AstraZeneca vaccine as a third dose to bolster immune protection for those who have …

source: newscientist.com