Vermont reports their first case of the Lineage B.1.617 Delta variant in a Chittenden County traveler.
In Guangzhou, hundreds of flights at Guangzhou Baiyun International Airport are canceled and the Liwan District is placed under lockdown following an outbreak of the Lineage B.1.617 variant, believed to be the first community outbreak of this variant in the country.
The World Health Organization announces a new system of naming the COVID-19 variants using the Greek alphabet in order to avoid stigmatizing countries where variants are first detected. According to the new system, B.1.1.7 becomes Alpha, B.1.351 becomes Beta, and P.1 becomes Gamma. Meanwhile B.1.617, which split into sub-lineage B.1.617.1 and B.1.617.2, is called Kappa and Delta respectively.
France begins implementing a seven-day quarantine and pre-departure testing for EU nationals, French residents, and anyone travelling to the United Kingdom for essential reasons in order to prevent the spread of the Lineage B.1.617 variant that originated in India as all non-essential travel to the UK is currently banned.
Indonesia reports its first two cases of the Lineage B.1.617 variant, first discovered in India, in two people from Jakarta. The country also reports its first case of the Lineage B.1.351 variant, first discovered in South Africa, in a person from Bali.