World Delta variant doubles risk of COVID hospital admission: Study
The Delta strain isn't the only COVID-19 variant you're likely to hear about. Here's a list
The World Health Organization has renamed the different strains of COVID-19 to take on the first four letters of the Greek alphabet.Under the changes, the four most concerning variants take on the first four letters of the Greek alphabet — Alpha, Beta, Gamma and Delta.
The Delta coronavirus variant doubles the risk of hospitalisation compared with the previously dominant variant in the United Kingdom, but two doses of vaccine still provide strong protection, a Scottishhas found.
The study said early evidence suggested the protection from vaccines against the Delta variant, first identified in India, might be lower than against the Alpha variant, first identified in Kent, southeast England.
How the coronavirus Delta variant rampaged through India before spreading across the globe
As Delta rampaged through India undetected, doctors were confounded by the sheer scale of the virus's spread. This is how the COVID-19 variant fuelled a calamitous surge in cases before slipping beyond the country's borders.Daily confirmed infections were in the low hundreds and serological surveys, which detect COVID-19 antibodies in the blood, suggested more than half the city's population had been infected after overcoming three surges.
British Prime Minister Boris Johnson is expected to delay the ending of COVID-19 restrictions in England on Monday, following a rapid rise in cases of the Delta variant, which is also more transmissible than the Alpha variant.
The study, published in a research letter in The Lancet on Monday, looked at 19,543 community cases and 377 hospitalisations among 5.4 million people in Scotland, of which 7,723 cases and 1,234 hospitalisations were found to have the Delta variant.
Chris Robertson, professor of public health epidemiology at the University of Strathclyde, said adjusting for age and comorbidities, the Delta variant roughly doubled the risk of hospital admission, but vaccines still reduced that risk.
“If you test positive, then two doses of the vaccine or one dose for 28 days roughly reduces your risk of being admitted to hospital by 70 percent,” he told reporters.
The Doctor Who Eliminated Smallpox Says COVID-19 Is Here to Stay
In some pockets of the United States, if you squint hard enough, the coronavirus pandemic might feel like it’s almost over. Larry Brilliant would beg to disagree. With U.S. COVID-19 deaths soon to surpass the domestic toll from the great influenza of a century ago even as widely available vaccines have worked wonders, Brilliant, the epidemiologist who worked with the WHO to help eradicate smallpox and was the science adviser for the eerily prescient film Contagion, thinks there’s still plenty left to worry about—but also lots of good news to appreciate.
Two weeks after the second dose, Pfizer-BioNTech’s vaccine was found to have 79 percent protection against infection from the Delta variant, compared with 92 percent against the Alpha variant.
For Oxford-AstraZeneca’s vaccine, there was 60 percent protection against Delta compared with 73 percent for Alpha.
“The Oxford–AstraZeneca vaccine appeared less effective than the Pfizer–BioNTech vaccine in preventing SARS-CoV-2 infection in those with the Delta variant of concern,” the authors wrote in The Lancet article.
However, they added: “Given the observational nature of these data, estimates of vaccine effectiveness need to be interpreted with caution.”
Is a Deadly Surge of the Delta Variant Headed for the U.S.?
The so-called Delta variant of the coronavirus, which was first detected in India and may carry double the risk of hospitalization compared to the Alpha—or U.K. strain—can cause unusual symptoms. Some people have reported hearing loss. Others, severe gastric distress. One Mumbai cardiologist reportedly treated two COVID patients with blood clots so severe, they required amputations of fingers or feet. “Last year, we thought we had learned about our new enemy, but it changed,” Abdul Ghafur, an infectious disease physician at the Apollo Hospital in Chennai, India, told Bloomberg. “This virus has become so, so unpredictable.
The scientists said two doses of vaccine provide much better protection than one dose against the Delta variant, and a delay to easing lockdown in England would help more people get second doses and for their immune responses to build up.
“I think any sort of increase in the window of opportunity before lockdown measures are completely brought to an end will be helpful,” said Aziz Sheikh, director of the Usher Institute at the University of Edinburgh.
Foreign Secretary Dominic Raab indicated at the weekend the government wanted to use the additional time to get millions more younger people double-jabbed.
He said while the vaccines had weakened the link between infections and hospital admissions, they wanted to be sure it was “severed and broken”.
The cautious approach was, he said, necessary to ensure the unlocking was “irreversible” and that they did not have to “yo-yo back in and out of measures”.
The latest daily government figures on Monday showed another rise in infections with a further 7,742 lab-confirmed cases in the UK.
Coronavirus in Toulouse: means deployed to stem the arrival of the Variant Delta .
while the number of contaminations continues to decline, means are deployed to delay the arriving from the delta variant in the region. As on the Airbus Defense & Space website after the discovery of a case © Mourad Allili / SIPA an antigenic test before vaccination (illustration). Epidemics - While the number of contaminations continues to decline, means are deployed to delay the arrival of the delta variant in the region.