Coronavirus cases in South Africa have soared by 92 per cent in 24 hours, just days after the country's scientists sounded the alarm about the Omicron variant.
Leading virologist Tulio de Oliveira described the surge in infections as 'scary' as he urged the public to get vaccinated and use face masks.
In the space of two weeks, the Omicron variant has sent South Africa from a period of low transmission to rapid growth of new confirmed cases.
More than ten per cent of those tested for Covid across South Africa have tested positive, official data showed, as 4,473 cases were recorded on Tuesday - an increase of 92 per cent compared to the day before.
But scientists in the country have warned that the vast majority of people who end up being hospitalised with the Omicron variant are unvaccinated.
De Oliveira said on Twitter: 'Goodness me! Scary increase of cases and positivity rate in South Africa. Please keep safe, use a mask and go for vaccination as 1000s of scientists in the world try to understand better.'
Coronavirus cases in South Africa have soared by 92 per cent in 24 hours, just days after the country's scientists sounded the alarm about the Omicron variant
More than ten per cent of those tested for Covid across South Africa have tested positive, official data showed, as 4,473 cases were recorded on Tuesday - an increase of 92 per cent compared to the day before
A healthcare worker speaker to a woman queuing for a PCR Covid-19 test at the Lancet laboratory in Johannesburg on Tuesday
Leading virologist Tulio de Oliveira described the surge in infections as 'scary' as he urged the public to get vaccinated and use face masks
A total of 42,664 tests were conducted in the last 24 hours, with 4,373 new cases reported, data from The National Institute for Communicable Diseases (NICD) in South Africa revealed.
That is a 92 per cent increase compared to the 2,273 cases recorded on Monday.
The number infections represents a 10.2 per cent positivity rate, which is the percentage of those tested who are infected with the virus.
While numbers of confirmed cases are still relatively low, they have been increasing at a high rate. The new spike started after some student parties in Pretoria. Numbers quickly jumped from a few hundred cases a day to thousands.
The NICD said that Covid cases, including that of the Omicron varient, were highest in the province of Gauteng - in particular in the city of Pretoria.
Doctors have warned that the unvaccinated are much more likely to end up in hospital if they are infected with the new variant, with 87% of admissions being patients who have not been jabbed.
'Most of our daily increases at this stage are from Gauteng, at about 81 per cent,' said Mr Michelle Groome, the head of the division of public health surveillance and response at the NICD.
'There has been a tremendous increase in the past 10 to 14 days,' she added.
Meanwhile Dr Waasila Jassat, of the NICD, said that unvaccinated patients are suffering more severe symptoms compared to the jabbed, and were much more likely to end up in hospital if they were infected with the Omicron variant.
Dr Jassat also warned that a higher number of children under the age of two are becoming ill with the virus, adding that 'we may need to look at paediatric bed preparedness'.
A further 21 Covid deaths were reported in the last 24 hours in South Africa, bringing the total fatalities to 89,843.
Meanwhile Dr Waasila Jassat, of the NICD, said that unvaccinated patients are suffering more severe symptoms compared to the jabbed, and were much more likely to end up in hospital if they were infected with the Omicron variant. Pictured: A woman received a Covid vaccine in Cape Town, South Africa on Tuesday
Experts have warned the early round of infections has been among the young and the situation may become more serious if the new surge affects older, unvaccinated South Africans. In all, 41% of those aged 18 and over are vaccinated — but young people have been particularly slow to step forward.
At least three South African universities — the University of Cape Town, Johannesburg's University of the Witwatersrand and the University of Free State in Bloemfontein — have announced that vaccinations will be mandatory for students starting next year. Some experts think further measures will be needed.
'I do think that the decision that South Africa is going to have to make is probably around mandatory vaccination,' said Mosa Moshabela, professor of public health at the University of KwaZulu-Natal in Durban.
Demand for the vaccine has been so sluggish that the government recently requested slower deliveries to allow it time to use up its current stock of 19 million doses of the Pfizer-BioNTech and Johnson & Johnson shots.
In an address to the nation on Sunday, a solemn President Ramaphosa urged people to get vaccinated quickly.
'Tonight, I would like to call on every person who has not been vaccinated to go to their nearest vaccination station without delay,' he said. 'If there is someone in your family or among your friends who is not vaccinated, I call on you to encourage them to get vaccinated.'
South Africa's Health Department Mark van den Heever has urged the public to get vaccinated against Covid as the new variant runs rife.
'Given the high transmissibility of this variant, we strongly encourage all eligible persons who are not yet vaccinated to do so, as it is their best defence against severe illness and even death,' he said.
South Africa first reported the Omicron variant to the World Health Organisation on November 24.
But Dutch health authorities today revealed that the variant was already in the Netherlands five days before South Africa sounded the alarm.
The RIVM health institute found the mutant Covid strain in samples dating from November 19 and 23.
But the WHO said South Africa first reported the the variant to the UN health agency on November 24 - meaning the new variant was already being transferred around the world before anyone even knew it existed.
The RIVM said the two samples from PCR tests showed an abnormality in their spike protein and were sent to a lab for further studies.
The results have now been returned and confirmed as the Omicron variant.
It is not known whether these earlier cases were identified in travelers who had returned from South Africa, or whether they originated elsewhere.
But it could call into question the origins of the new variant which has led to travel restrictions on certain countries.
Travel bans have been criticised by South Africa and the WHO has urged against them, noting their limited effect.
Much is still not known about the variant - though the WHO warned that the global risk from the variant is 'very high' and early evidence suggests it could be more contagious.
Authorities in the eastern German city of Leipzig, meanwhile, said Tuesday they had confirmed an infection with the omicron variant in a 39-year-old man who had neither been abroad nor had contact with anyone who had been, news agency dpa reported.
Leipzig is in the eastern state of Saxony, which currently has Germany's highest overall coronavirus infection rates.
Meanwhile, Japan and France announced their first cases of the new variant on Tuesday.
French authorities confirmed its presence in the French island territory of Reunion in the Indian Ocean.
Patrick Mavingui, a microbiologist at the island's research clinic for infectious diseases, said the person who has tested positive for the new variant is a 53-year-old man who had traveled to Mozambique and stopped in South Africa before returning to Reunion.
The man was placed in quarantine. He has 'muscle pain and fatigue,' Mavingui said, according to public television Reunion 1ere.
A day after banning all foreign visitors as an emergency precaution against the variant, Japan also confirmed its first case, in a visitor who had traveled from Namibia.
A government spokesperson said the patient, a man in his 30s, tested positive upon arrival at Narita airport on Sunday and was isolated and is being treated at a hospital.
Travel bans also continued to fall Tuesday.
Cambodia barred entry to travelers from 10 African countries, citing the threat from the variant.
The move came just two weeks after Cambodia reopened its borders to fully vaccinated travelers.
While it has urged against border closures, the WHO has stressed that while scientists are hunting evidence to better understand this variant, countries should accelerate vaccinations as quickly as possible.
WHO said there are 'considerable uncertainties' about the omicron variant. But it said preliminary evidence raises the possibility that the variant has mutations that could help it both evade an immune-system response and boost its ability to spread from one person to another.
Despite the global worry, doctors in South Africa are reporting patients are suffering mostly mild symptoms so far.
But they warn that it is early and most of the new cases are in people in their 20s and 30s, who generally do not get as sick from Covid-19 as older patients.
Pfizer boss says the Omicron variant is UNLIKELY to cause severe illness in fully-vaccinated people as UK's Covid infections fall 6.5% in a week to 39,716 and hospital admissions drop 6% amid fears of a new winter wave
By Joe Davies for MailOnline
The boss of BioNTech believes the Omicron variant is unlikely to cause severe illness in people fully vaccinated with the Pfizer shot amid fears of a new winter wave.
Dr Ugur Sahin, co-founder of the Germany-based company and Pfizer's Covid vaccine manufacturing partner, told The Wall Street Journal on Tuesday that the variant can cause breakthrough infections at a higher rate.
However, once in the body, the variant would likely be destroyed.
He said: 'If a virus achieves immune escape, it achieves it against antibodies, but there is the second level of immune response that protects from severe disease - the T-cells.
'Even as an escape variant, the virus will hardly be able to completely evade the T-cells.'
Dr Sahin claimed that a vaccinated person will have the immune system capacity necessary to defeat the mutated virus, and encouraged people to get their booster shots when they can.
Many experts have feared that the Covid vaccines would not be effective against the variant because of how many mutations it has of the spike protein that the vaccines target.
But the BioNTech chief added: 'Don't freak out, the plan remains the same: Speed up the administration of a third booster shot.'
Britain's Covid crisis shrunk on all three fronts today, official figures show despite eight new cases of the Omicron variant being discovered in England prompting No10 to announce a mammoth new booster drive.
Department of Health bosses posted 39,716 new positive tests over the last 24 hours, down 6.5 per cent on last Tuesday's figure of 42,484.
It was the fourth day in a row cases have fallen, despite the UK Health Security Agency (UKHSA) announcing it has sequenced the supermutant strain in Barnet and Haringey in London, Liverpool, North Norfolk and Sutton.
The number of people dying with the virus also fell 3.6 per cent to 159 today, down from 165 recorded last week.
And hospitalisations dropped to 718 on Friday, the latest date that data is available for. It was down 6.1 per cent on the previous week and marked the fourteenth day admissions had fallen.
The figures come as Boris Johnson pledged to deliver third doses to all adults by the end of January to shield the nation against
