South Africa has accelerated its vaccination campaign by giving jabs at pop-up sites in shopping centres and transport hubs to combat a rapid rise in new Covid-19 cases, a week after the discovery of the Omicron variant of the coronavirus.

New daily cases nearly doubled to 8,561 on Wednesday, from 4,373 a day earlier, according to official statistics. Scientists said they were braced ready for the surge to continue.

“We want families to be safe this festive season,” minister of health Joe Phaahla said on Thursday.

A woman selling snacks at a taxi rank in Soweto
A woman selling snacks at a taxi rank in Soweto (Jerome Delay/AP)

“Before you go home, before you leave on vacation, make sure you protect yourself and those you love. If you visit your parents and they have not yet been vaccinated, go with them to your closest vaccination site. It could save their lives.”

Gauteng province, where South Africa’s largest city, Johannesburg, and the capital, Pretoria, are located, is a hotspot of new infections, accounting for more than 70% of the new cases.

Gauteng officials said they were “preparing for the worst” by increasing hospital beds and reopening some field hospitals in anticipation of increased admissions of Covid-19 patients.

Tests indicate that the Omicron variant, which was first reported in Southern Africa, is spreading quickly and is now in five of South Africa’s nine provinces. It is not known how many of the new daily cases involve Omicron because scientists can only do full genetic sequencing on a small number of positive tests.

Passengers queue at a taxi in Soweto
People queuing at a taxi rank in Soweto (Jerome Delay/AP)

But it appears that Omicron is “rapidly becoming the dominant variant” in South Africa, according to a statement issued by the National Institute for Communicable Diseases.

The institute said that 74% of the 249 samples sequenced in November were identified as Omicron.

In October, before Omicron was discovered, the Delta variant was the dominant form of the coronavirus in South Africa.

Scientists in South Africa and around the world are doing genetic sequencing of Omicron samples to learn more about the variant.

Much remains unknown about the strain, including whether it is more contagious, as some health authorities suspect, if it makes people more seriously ill or whether existing vaccines are effective against it.

Shoppers sort through goods at an outdoor market in Soweto
Shoppers sorting through goods at an outdoor market in Soweto (Jerome Delay/AP)

Gauteng premier David Makhura said on Thursday that he was encouraged to see more people getting vaccinated, with the province recording at least 50,000 vaccinations daily this week.

But about half of the province’s 16 million people remained unvaccinated, Mr Makhura said.

The number included many migrants who were in South Africa without authorisation and were unable to get vaccinated because they could not be recorded in the digital vaccination system, he said.

About 36% of adults in South Africa were fully vaccinated, according to official statistics. And the country now had 19 million doses of the Pfizer/BioNTech and the Johnson & Johnson vaccines, but the pace of vaccinations had slowed.

That is why officials launched the new campaign to increase the numbers of vaccines administered before large numbers of South Africans began traveling and socialising during the holiday season.

Since the pandemic began, South Africa, with a population of 60 million people, has reported a total of 2.9 million confirmed cases and nearly 90,000 deaths in the pandemic.