So far, vaccines are still able to defend against serious disease and death from Delta, but scientists remain on alert. Here is what we know:DELTA – STILL DOMINANTThe Delta variant, first detected in India in December 2020, remains the most worrisome version of the SARS-CoV-2 virus. Delta is more than two times as contagious as previous SARS-CoV-2 variants, according to the U.S. Centers for Disease Control and Prevention. People infected with Delta carry around 1,200 times more virus in their noses compared with the original version of the coronavirus. DELTA OFFSPRINGGiven Delta’s global dominance, many vaccine experts now believe that all future variants will be offshoots of Delta.
