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The new variant reduces the effectiveness of vaccines by 40% and even booster shots have no impact on the 'super strain'.

WHO classifies Omicron as 'Variant of Concern' as it shows high vaccine resistance

The purpose of booster dose is to extend vaccine efficacy in people who have already received primary vaccination.

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WHO classifies Omicron as 'Variant of Concern' as it shows high vaccine resistance

Explained: Over 36 countries are administering Covid booster shots; Is India ready for the third dose?