Why the Delta variant is spreading so much faster than other coronavirus strains
July 21, 2021. Summarized by summa-bot.
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Worldwide, there is an alarming surge in coronavirus cases -- and health experts say a key factor in this latest wave is the highly contagious Delta variant.
(CNN)Worldwide, there is an alarming surge in coronavirus cases -- and health experts say a key factor in this latest wave is the highly contagious Delta variant.
The variant is spreading about 55% faster than the alpha strain that was first identified in the United Kingdom late last year, according to the World Health Organization (WHO) -- and that strain spreads about 50% faster than the version that first began infecting people in late 2019.
The Delta variant has been found in all 50 US states.
That's behind a surge, mainly among unvaccinated people in the country -- the average of new daily cases this week is up 55% from last week, with cases rising in 46 states as of Tuesday, according to data from Johns Hopkins University.
When scientists in China compared dozens of cases of delta to strains from early in the pandemic, they found that patients with the Delta variant had viral loads that were 1,260 times higher.
The vaccines available in the United States are proving to be effective against the Delta variant.
More than 97% of people getting hospitalized with Covid-19 now are unvaccinated, Walensky said last week.