The U.K. added six African countries to its travel quarantine list on Thursday after a new, potentially more-transmissible variant of Covid-19 was identified there. Those countries are: South Africa, Namibia, Zimbabwe, Botswana, Lesotho and Eswatini, according to the BBC.
Twenty-two positive cases of the variant, currently being called B.1.1.529, have been recorded in South Africa, according to multiple reports. Worldwide, only 59 cases have been detected, and only in South Africa, Hong Kong and Botswana. But some experts are concerned.
“This variant did surprise us, it has a big jump in evolution, many more mutations than we expected, especially after a very severe third wave of Delta,” Tulio de Oliveira, director of the KwaZulu-Natal Research and Innovation Sequencing Platform told the New York Times.
The new variant has over 30 mutations in the spike protein alone, which raises fears on increased transmissibility, according to a South African researcher cited by the Times. The new variant has 10 mutations alone on the ACE2 receptor, which helps the virus to enter cells. That’s five times more mutations on that structure than the Delta variant exhibits, according to the researcher.
In Botswana, the health ministry confirmed four cases of B.1.1.529 were found fully-vaccinated patients. The single case in Hong Kong was carried there by a traveler from South Africa, according to multiple reports.
South Africa’s National Institute for Communicable Diseases said in a statement today that “detected cases and percent testing positive are both increasing quickly, particularly in Gauteng, North West and Limpopo [provinces]. Seventy-none percent of new cases today are from Gauteng, which accounts for about 25% of the country’s population, said the statement. In Gauteng case rates are rising rapidly, and test positivity is 31.7%. For comparison, in California it’s under 2%.
“Although the data are limited, our experts are working overtime with all the established surveillance systems to understand the new variant and what the potential implications could be. Developments are occurring at a rapid pace and the public has our assurance that we will keep them up to date,” said Prof Adrian Puren, NICD Acting Executive Director.