How vital it is to have booster dose against Omicron?

Omicron in India: The cases of the Omicron variant of coronavirus rose to 21 in India after the new variant was found in 17 more people on Sunday. Among the new cases, nine were detected in Jaipur, seven in Pune, and one in Delhi. The person who came to Delhi from Tanzania, who tested positive for the Omicron variant, was fully vaccinated. So far, Omicron variant cases have been reported in Karnataka, Gujarat, Delhi, and Rajasthan. Health experts informed what all precautions need to be taken against this new variant and how important is to have a booster dose to fight against this new variant. Watch this video.