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So the UK fast tracking first jab and delaying the second vaccination will backfire due to the new Delta variant.

Delta Variant and COVID-19 Vaccines: What to Know

In Northern Ireland, the gap between the first and second doses of the AstraZeneca and Pfizer vaccines is being cut to 8 weeks from 10-12 weeks to offer more protection against the delta variant, the BBC reported.

"It seems this variant can get past our first dose of vaccine," says Queen's University Belfast virologist Connor Bamford, according to the BBC. "So, we need to make sure as many people as possible get their two doses and even think about decreasing the length between dose one and two because that's going to be critical going forward."

by Oui on Fri Jun 11th, 2021 at 10:10:40 PM EST
by Oui on Fri Jun 11th, 2021 at 10:11:36 PM EST
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Sweden sees 'dark clouds' with outbreaks of COVID delta variant

by Oui on Fri Jun 11th, 2021 at 10:12:37 PM EST
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Semantics to ease Delta outbreak in England 🏴󠁧󠁢󠁥󠁮󠁧󠁿...

What difference does it make when you get your second AstraZeneca jab? | SMH AU |

The Delta variant has acquired mutations that slightly change the shape of its spike protein - the microscopic harpoon it uses to enter our cells - meaning some antibodies that would have gummed up earlier variants slide right off Delta. These changes appear to significantly cut the effectiveness of both AstraZeneca and Pfizer's vaccines. Those drop-offs in effectiveness are most pronounced after a single dose of either vaccine.

"You used to get really good levels of protection against Alpha and Beta [variants] with a single jab. That's very much changed now," says Associate Professor Nathan Bartlett, head of the viral immunology and respiratory disease group at the Hunter Medical Research Institute at the University of Newcastle. "And that's the issue with a vaccine that was designed based on a virus that was circulating almost two years ago now."

by Oui on Sun Jul 18th, 2021 at 04:06:25 PM EST
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