The pandemic is not coming to an end soon — given that only a small proportion of the world population has been vaccinated against Covid-19, a well-known epidemiologist told CNBC.
Dr. Larry Brilliant, an epidemiologist who was part of the World Health Organization’s team that helped eradicate smallpox, said the delta variant is “maybe the most contagious virus” ever.
WHO declared Covid-19 a global pandemic last March — after the disease, which first emerged in China in late 2019, spread throughout the world.
The good news is that vaccines — particularly those using messenger RNA technology and the one by Johnson & Johnson — are holding up against the delta variant, Brilliant told CNBC’s “Street Signs” on Friday.
Unless we vaccinate everyone in 200 plus countries, there will still be new variants.Larry BrilliantEPIDEMIOLOGIST
Still, only 15% of the world population has been vaccinated and more than 100 countries have inoculated less than 5% of their people, noted Brilliant.
“I think we’re closer to the beginning than we are to the end [of the pandemic], and that’s not because the variant that we’re looking at right now is going to last that long,” said Brilliant, who is now the founder and CEO of a pandemic response consultancy, Pandefense Advisory.
Probability of ‘super variant’
Brilliant said his models on the Covid outbreak in San Francisco and New York predict an “inverted V-shape epidemic curve.” That implies that infections increase very quickly, but would also decline rapidly, he explained.
If the prediction turns out be true, it means that the delta variant spreads so quickly that “it basically runs out of candidates” to infect, explained Brilliant.
There appears to be a similar pattern in the U.K. and India, where the spread of the delta variant has receded from recent highs.
But I do caution people that this is the delta variant and we have not run out of Greek letters so there may be more to come.Larry BrilliantEPIDEMIOLOGIST
Daily reported cases in the U.K. — on a seven-day moving average basis — fell from a peak of around 47,700 cases on July 21 to around 26,000 cases on Thursday, according to statistics compiled by online database Our World in Data.
In India, the seven-day moving average of daily reported cases has stayed below 50,000 since late June — far below the peak of more than 390,000 a day in May, the data showed.
The epidemiologist said there is a low probability that a “super variant” may emerge and vaccines don’t work against it. While it’s hard to predict these things, he added, it’s a non-zero probability, which means it cannot be ruled out.
“It’s such a catastrophic event should it occur, we have to do everything possible to prevent it,” said Brilliant. “And that means get everyone vaccinated — not just in your neighborhood, not just in your family, not just in your country but all over the world.”
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