Scientists Fear We’re Not Ready for Nightmare New COVID Variant

A wave of COVID infections caused by the BA.5 subvariant has crested. All over the world, daily new cases, hospitalizations and deaths are going down.

But the SARS-CoV-2 virus is almost certainly here to stay. Another wave is all but inevitable as new variants and subvariants mutate, compete for dominance, and find new transmission pathways.

How fast that wave comes, and how bad it gets, probably comes down to a genetic competition between different mutations of the novel coronavirus. If we get lucky, a mild form of the virus wins out—and buys us time to prepare for a worse form of the virus that’s almost certainly coming, sooner or later.

If we’re unlucky, that worse one comes sooner.

The scientific community is taking nothing for granted. “What we have learned from this pandemic is to expect the unexpected,” Cindy Prins, a University of Florida epidemiologist, told The Daily Beast.

BA.5, an offshoot of the basic Omicron variant, was still dominant when epidemiologists began looking for the version of COVID that might come after BA.5. They’ve identified two main possibilities.

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The best of the likely possibilities is yet another form of Omicron, a variant our immune systems recognize and know how to beat. The worst is some brand-new variant that might slip right past our antibodies. A Pi, Rho or Sigma variant, if you will.

Either outcome is possible. The only thing experts don’t expect is for COVID to just… disappear. “The virus always figured out a way to survive,” John Swartzberg, a professor emeritus of infectious diseases and vaccinology at the University of California-Berkeley’s School of Public Health, told The Daily Beast. “I see nothing that suggests it’s not going to continue to do that.”

BA.5 is the third major subvariant of Omicron, itself the third major variant of the virus after Alpha and Delta. BA.1, the baseline Omicron, became dominant late last year, replacing forms of Delta.

BA.1 wasn’t as lethal as Delta was, owing mostly to widespread immunity from vaccines and past infection. The worst day for BA.1 deaths, 13,000 on Feb. 9, was less catastrophic than the worst day for Delta deaths, 18,000 on Jan. 20.

But BA.1 was way more contagious than Delta. Some epidemiologists described it as the most transmissible respiratory virus they’d ever seen. BA.1 drove a record wave of infections that peaked at nearly 4.1 million new cases globally on Jan. 19.

The BA.1 wave led to two smaller surges in cases as new Omicron subvariants took over. BA.1 cases subsided in February; BA.2 drove them back up in March. BA.2 infections eased in May. BA.5 drove them back up in June.

The BA.5 surge peaked with 1.6 million new cases on July 20 and 4,500 deaths on July 27. Now infections and deaths are dropping almost everywhere that isn’t Japan.

The relative decline in COVID belies what is, by our pre-pandemic standards, still widespread suffering. “It is quite a reflection of what we have faced during the past few years that we could be in a situation with more than 120,000 known new infections per day, more than 43,000 hospitalizations per day—with 5,000 in ICUs—and 450 deaths per day [in the U.S.] and be in a mindset where we are thinking, ‘This is not so bad, we have seen worse,’” Anthony Alberg, a University of South Carolina epidemiologist, told The Daily Beast.

And the reprieve is temporary. If the last 32 months are any guide, the next COVID wave will build this winter. The only variable is the form of the virus. Is the next dominant form of SARS-CoV-2 the fourth major Omicron subvariant? Or a totally new variant?

The distinction matters a lot. All the Omicron sublineages share certain key mutations, especially around the virus’ spike protein, the part of the pathogen that helps it grab onto and infect our cells.

By now billions of people have antibodies that recognize those mutations, whether the antibodies are from one of the safe and highly-effective vaccines or from past infection. It’s the steady build-up of immunity over the past two years that’s kept death rates down even as infection rates go up. A lot of people have caught COVID since last winter—some for the second or third time. Most had mild cases.

If yet another offspring of Omicron becomes dominant in the next few months, that trend should continue. There’ll probably be a weeks-long surge in cases. But deaths might increase only slightly.

Our antibodies are ready, said Edwin Michael, an epidemiologist at the Center for Global Health Infectious Disease Research at the University of South Florida who has built sophisticated computer models for simulating the COVID pandemic.