Перші дані в реальному світі.
study of more than 78,000 omicron cases in South Africa recorded between Nov 15 and Dec 7 also found that the Pfizer jab still offers 70 per cent protection against hospitalisation after two doses.
The research showed that, compared with the first Wuhan strain, the virus led to 29 per cent fewer admissions to hospital, with 23 per cent fewer hospital admissions compared with delta.
Far fewer people also needed intensive care from omicron, with just five per cent of cases admitted to ICU compared with 22 per cent of delta patients.