On the third anniversary of the COVID-19 pandemic, the virus is still spreading and the death toll is nearing 7 million worldwide. Yet most people have resumed their normal lives, thanks to a wall of immunity built from infections and vaccines.
The virus appears here to stay, along with the threat of a more dangerous version sweeping the planet.
"Whatever the virus is doing today, it's still working on finding another winning path," said Dr. Eric Topol, head of Scripps Research Translational Institute in California. Dr. Stuart Campbell Ray, an infectious disease expert at Johns Hopkins, said the current omicron variants have about 100 genetic differences from the original coronavirus strain. That means about 1 per cent of the virus' genome is different from its starting point. Many of those changes have made it more contagious, but the worst is likely over because of population immunity.
"We rely so heavily on public data and it's just not there," said Beth Blauer, data lead for the project.
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