Stay up to date with notifications from The Independent

Notifications can be managed in browser preferences.

Delta variant: Where in the US is it and can the Covid vaccines protect against it?

With Joe Biden expected to fall short of a vaccination target, experts warn of the risks for unvaccinated Americans

Gino Spocchia
Tuesday 22 June 2021 14:08 BST
Comments
Delta variant is 'coronavirus on steroids' says former White House advisor
Leer en Español

Your support helps us to tell the story

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.

Your support makes all the difference.

Cases of the Delta variant are rising across the United States, with the more transmissible strain of Covid contributing to 10 per cent of all infections.

On Friday, the director of the Centres for Disease Control and Prevention (CDC), Rochelle Walensky, forecast the variant to become the dominant form of Covid in the US in the coming weeks – thanks to its transmissibility.

“It is more transmissible than the alpha variant, or the UK (Alpha) variant that we have here,” Ms Walensky told ABC News.

“We saw that quickly become the dominant strain in a period of one or two months, and I anticipate that is going to be what happens with the Delta strain here.”

Despite Covid cases flatlining, Delta has been doubling nearly every week in the US, accounting for as few as 2.7 per cent of Covid infections on 22 May, and 0.6 per cent in April.

By Friday, Delta was believed to be 10 per cent of all Covid infections, with the CDC classifying it as a “variant of concern” – along with Gamma (first identified in Brazil), and Alpha (first identified in the UK).

The designation is an acknowledgement of Delta’s increased transmissibility, and concerns that Delta (first identified in India) could be resistant to vaccines.

Initial findings from the UK, where the Delta variant has delayed reopening from Covid restrictions by four weeks, indicate that two doses of the Pfizer vaccine are highly effective – at 96 per cent – at preventing hospitalisation from Delta.

In the US, disparities between north and south, and between Democrats and Republicans, in rates of vaccinations are worrying both officials and analysts about the dangers of Delta – which is found in 41 states, according to the Washington Post.

“This is the most dangerous phase of the pandemic coming up for people who are unvaccinated," said Dr Gregory Poland, director of the Mayo Clinic's Vaccine Research Group in Rochester, Minnesota, in comments to NBC News.

US president Joe Biden, in a plea for Americans to get both doses of a Covid vaccine on Friday, also warned of the risks of variants with restrictions across the US disappearing.

His administration is expected to fall shy of a 70 per cent vaccination target by 4th July.

Join our commenting forum

Join thought-provoking conversations, follow other Independent readers and see their replies

Comments

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in