The World Health Organization had designated Delta as a variant of concern on May 11 and predicted that it will rapidly become the dominant strain across the world. In June, Swaminathan had said the Delta variant was becoming the dominant variant globally “because of its significantly increased transmissibility”.

Earlier this week, the global health body had urged governments to be cautious while easing restrictions in their countries, according to Bloomberg.

In April, the United States’ Centers for Disease Control and Prevention had said that fully vaccinated people did not need to wear masks in most indoor settings.

Earlier this month, British Prime Minister Boris Johnson announced that all restrictions would be lifted on July 19, branding it as “Freedom Day.” Responding to the announcement, a group of scientists, doctors and other professionals published a letter in medical journal The Lancet, urging the government to reconsider its current strategy.

Globally, the coronavirus disease has infected over 18.59 crore people and killed over 40.17 lakh since the pandemic broke out in December 2019, according to Johns Hopkins University.