US CDC classifies Delta variant as ‘variant of concern’

Prime Minister Boris Johnson making a televised address to the nation from 10 Downing Street London setting out new emergency measures to control the spread of coronavirus in England

Prime Minister Boris Johnson making a televised address to the nation from 10 Downing Street London setting out new emergency measures to control the spread of coronavirus in England

AY.1, or B.1.617.2.1, has a mutation called K417N that is linked to high infectivity (ability of a pathogen to establish an infection) and has been associated with the Beta variant, first identified in South Africa. Meanwhile, the AstraZeneca vaccine provided 73 per cent protection against the Alpha variant and 60 per cent against the Delta variant.

While the former was found 96 per cent effective against the Delta variants, the later is 92 per cent effective after two doses.

AstraZeneca further cleared that according to the data from PHE, the vaccine's effectiveness for milder symptomatic patients was lower 74 per cent for Alpha variant that was found predominantly in the United Kingdom and 64 per cent against Delta variant.

The Delta variant has been attributed to the rapid outbreak in the small population of Labuan with fewer than 100,000 residents. Moreover, the scientific analysis now in Public Health England journal found no deaths among the vaccinated who were studied. About 19, 500 confirmed Covid-19 cases were analysed out of which 377 sought hospital admission.

"The data wasn't entirely clear to me of how many people were vaccinated in the actual symptom group", Craig Jenne, infectious disease researcher and Canada Research Chair at the University of Calgary, told CTVNews.ca in an interview.

Queen Elizabeth II hosts Bidens at Windsor Castle
It was perhaps a bittersweet moment, the first such ceremony since the death of her husband, the Duke of Edinburgh, in April. She has since met all 14 elected U.S. leaders during her 69 years on the throne, except for Lyndon B Johnson.

"I think it's really hard to compare this emerging data to what we know about the other ones because it's not a controlled study", he said.

Initially, the classic COVID-19 symptoms were said to be a cough, fever and loss of smell or taste.

It now accounts for about 90% of Covid cases in the UK.

Health leaders in Milwaukee County believe the Delta coronavirus variant is concerning to residents as the Centers for Disease Control announced there is growing evidence the variant is more contagious and causes more severe cases.

While the data isn't clear, all the experts agree that it's more important than ever to proceed with caution. "It might just feel like a bad cold or some amusing "off" feeling - but do stay at home and do get a test".

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