B1427/B1429 are listed as Variants of Concern by the CDC, as Variants of Interest (VOI) by WHO
The World Health Organization lists as B.1.427 and B.1.429 as Variants of Interest. The CDC website, however, lists B.1.427 and B.1.429 as Variants of Concern along with B.1.1.7 (UK variant), P.1 (Brazilian Variant) and B.1.351 (South African Variant).
CDC: SARS-CoV-2 Variant Classifications and Definitions
WHO: COVID-19 Weekly Epidemiological Update
** This post was originally published on April 27, 2021 **