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COVID Delta variant doubles the risk of hospitalization — Study

Existing vaccines protect against the Indian strain of coronavirus worse than the British version of Alpha

The so-called Indian strain of coronavirus, which the WHO previously named “Delta”, doubles the risk of hospitalization, and vaccines, although they protect against it, are worse than against other strains.

This is with reference to Professor of public health epidemiology at the University of Strathclyde (Scotland) Chris Robertson, reports Reuters.

The study looked at 19,543 cases and 377 hospitalizations among 5.4 million people in Scotland, of which 7,723 infections and 1,234 hospitalizations had the Delta variant.

According to preliminary results, the protection against the vaccine against the Delta variant may be lower than the effectiveness against the Alpha variant (British strain).

“If the test results are positive, then two doses of the vaccine or one dose over 28 days will reduce the risk of hospitalization by about 70%,” Robertson said.

At the same time, he noted that two weeks after the second dose of the Pfizer-BioNTech vaccine, protection against infection caused by the Delta variant is 79%, compared to 92% protection against the Alpha variant. And the Oxford-AstraZeneca vaccine provides 60% protection against Delta and 73% against Alpha.

The researchers also cautioned against using their data to compare vaccines with each other because of the differences in the cohorts who received each type of vaccination and the differences in the rate of immune development when using these vaccines.

The scientists stressed that two doses of the vaccine provide much better protection against the Delta variant than one.

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