Delta variant doubles risk of hospitalization for COVID-19, Scottish study finds – –

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Delta variant doubles risk of hospitalization for COVID-19, Scottish study finds – –


LONDON – The Delta coronavirus variant doubles the risk of hospitalization compared to the previously dominant variant in Britain, but two doses of the vaccine still offer strong protection, a Scottish study found on Monday.

The study indicated that early evidence suggested that the protection of vaccines against the Delta variant, first identified in India, may be lower than the efficacy against the Alpha variant, first identified in Kent, in the south-east of England.

The study, published in a research letter in The Lancet, looked at 19,543 community cases and 377 hospitalizations among 5.4 million people in Scotland, of which 7,723 cases and 134 hospitalizations were found to have the Delta variant.

Chris Robertson, professor of public health epidemiology at the University of Strathclyde, said that taking age and co-morbidities into account, the Delta variant roughly doubled the risk of hospitalization, but vaccines reduced always this risk.

“If your test is positive, then two doses of the vaccine or one dose for 28 days roughly reduces your risk of being hospitalized by 70%,” he told reporters.

Two weeks after the second dose, Pfizer BioNTech’s vaccine was shown to have 79% protection against infection with the Delta variant, compared to 92% against the Alpha variant. For the Oxford-AstraZeneca vaccine, there was 60% protection against Delta compared to 73% for Alpha.

The researchers cautioned against using the data to compare vaccines against each other because of differences in the cohorts that received each type of vaccine and differences in how quickly immunity develops to each other. every stroke.

They said two doses of the vaccine offered much better protection than a dose against the Delta variant, and that a delay in easing the lockdown in England would help more people get a second dose and boost their immune responses. .

“I think any sort of increase in the window of opportunity before the foreclosure measures are fully ended will be helpful,” said Aziz Sheikh, director of the Usher Institute at the University of Edinburgh.

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