Seems the answer is: 'No'.

There was a dramatic drop-off in India but it was a false-dawn.

BBC: A new double mutant variant of the coronavirus and 771 others have been detected in samples collected from 18 states across India.

Of the 10,787 samples, 736 were positive for the UK variant, 34 for the South African variant and one for the Brazilian variant.

(T)he government said there was no link between the spike in cases and these variants.

The big question is - do the vaccines work against variants? If they do - great. If they don't then it's Groundhog day.