How Worried Should Vaccinated People Be About the Delta Vari

How Worried Should Vaccinated People Be About the Delta Variant?


How Worried Should Vaccinated People Be About the Delta Variant?
Evidence suggests that covid-19, Delta variant or not, remains a much greater danger for people with no past exposure to the virus than for those vaccinated.
Photo: Joe Raedle (Getty Images)
The arrival of the Delta variant—the recently emerged strain of the coronavirus thought to be the most transmissible yet—in the U.S. is understandably unnerving scientists and the public alike. But how worried should you exactly be about Delta, especially if you’re fully vaccinated already?
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Delta, also known as B.1.617.2, was first discovered in India last October. Evidence, largely from the UK and India, suggests that it’s noticeably more likely to spread from one person to others than the Alpha variant (also known as B.1.1.7), the strain first found in the UK that was already more transmissible than the original lineages of the virus that first spread around the world. Estimates vary, but Delta may be around 40% more transmissible than Alpha and up to twice as transmissible as the classic coronavirus.

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