The study said early evidence suggested the protection from vaccines against the Delta variant, first identified in India, might be lower than the effectivessness against the Alpha variant, first identified in Kent, southeast England.
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, looked at 19,543 community cases and 377 hospitalisations among 5.4 million people in Scotland, 7,723 cases and 1234 hospitalisations of which were found to have the Delta variant.
Chris Robertson, Professor of Public Health Epidemiology, University of Strathclyde, said that adjusting for age and comorbidities, the Delta variant roughly doubled the risk of hospitalisation, 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%," he told reporters.
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