The Latest Omicron Subvariant: What is Omicron BF.7? After challenging the world with many variants and waves for over two and a half years, SARS-CoV-2 continues to form new variants and subvariants. The emergence and circulation of the Omicron variant along with its several subvariants, such as BA.2, BA.3, BA.4, and BA.5 has transformed the...