Sci-Tech: What is B.1.617 strain of SARS-CoV2 ? How do Cyclones Form? (E)
"B.1.617 strain of SARS-CoV2 first originated in India. Delta, which is one subtype of this strain, has become a variant of global concern. In the first section, we tell you why it is a matter of concern. In our second section, we show you how cyclones form. "
