coronavirus vaccines. In a recent report, the Mayo Clinic said that the strain is "hypercontagious" and is contributing to increases in hospitalisations and ICU admissions.
Those yet to be vaccinated against Covid-19 have about a five times higher chance of contracting the virus compared to those who are vaccinated and boosted, while chances of hospitalisation are 7.5 times higher, and chances of death are 14 to 15 times higher, said Gregory Poland, Head of the Mayo Clinic's Vaccine Research Group.
The two new subvariants were earlier spotted in South Africa in April and quickly spread worldwide and also have a high transmission rate.
They carry mutations on their spike protein – the part of the virus that attaches to ACE2 receptors on human cells so they can enter them.