The fall comes shortly after the country’s health minister, Joe Phaahla, announced Thursday that a new variant of the COVID-19 virus has been detected in the country.
“Over the last four or five days, there has been more of an exponential rise [in new infections],” the health minister said of South Africa’s case numbers of the CCP virus.
Little is known about the new variant, which has also been detected in Botswana and Hong Kong, but South African scientists say it has an unusual combination of mutations and may be able to evade immune responses or make it more transmissible.
To date, 10 cases of the new variant have been confirmed by genomic sequencing, with three cases in Botswana, where it was first detected; six cases in South Africa; and one case in Hong Kong, in a traveler from South Africa.
On Thursday, officials from the World Health Organization (WHO) said they are monitoring the new variant, called B.1.1.529, and are “concerned” about its numerous mutations.
“It will take a few weeks for us to understand what impact this variant has on any potential vaccines, for example,” Van Kerkhove said. “This is one to watch. I would say we have concerns, but I think you would want us to have concerns...We have people who are on this.”
The health agency is scheduling a special meeting Friday to access the new variant.
Meanwhile, scientists in South Africa are working to determine what percentage of new COVID-19 cases in the country have been caused by the new variant.