There are other variants of concern There are other variants of concern “But again, the one very big piece of encouraging news: The vaccines continue to work extremely well against the variants based on evidence we have so far.” “That's why many experts are concerned that cases will eventually start to rise as Delta becomes the dominant form of the virus,” she added. “We're seeing patients becoming sicker and their conditions are worsening much more quickly. Irons explained during a separate episode of the “AMA COVID-19 Update” on vaccination efforts and Novavax. “We know that it appears to be both more contagious and more severe than earlier versions of the virus,” explained Dr. “Even though this variant is hyper transmissible, a full vaccination series seems to protect against it, but you need both doses of a two-dose series-one mRNA vaccine dose may not be enough,” she added. “Delta is now the dominant variant in the U.K.” and it is “probably the most contagious variant we've seen yet, and it's here in the U.S.,” Dr. variant, now newly named the Alpha variant. “WHO says it's already spread to at least 80 countries,” she explained, noting that “it's about 60% more transmissible than B.1.1.7, the U.K. Fryhofer said during an episode of the “AMA COVID-19 Update” about COVID-19 vaccines and variants. “India's B.1.617.2, aka the Delta variant, is the newest CDC variant of concern,” Dr.
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