Delta variant of Covid spreading rapidly and detected in 74 countries

Concerns over impact on poorer countries, while richer governments try different containment measures

The Delta variant of Covid-19, first identified in India, has been detected in 74 countries and continues to spread rapidly amid fears that it is poised to become the dominant strain worldwide.

Outbreaks of the Delta variant have been confirmed in China, the US, Africa, Scandinavia and Pacific rim countries. Scientists report that it appears to be more transmissible, as well as to cause more serious illness.

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