As new COVID variants emerge, and vaccination efforts continue to hit roadblocks worldwide, experts worry that the new coronavirus may be here to stay.
So why did scientists think herd immunity was ever possible? The first pictures of coronavirus suggested a virus that would only evolve slowly.
But as the virus spreads, encountering more and more people and more and more immune responses, mutations become more likely."If you put it in hundreds of millions of people, more variations are going to arrive," John P. Moore, PhD, a professor of microbiology and immunology at Weill Cornell Medicine in New York City, saysSome scientists think the virus can never change enough to totally escape immunity generated by the vaccine.
There is growing evidence this natural immune process works against the variants, says Pauline Vetter, MD, an infectious disease specialist at Geneva University Hospitals in Switzerland. The complex interaction of these factors and others — such as the durability of the immune response — makes forecasting the future of the pandemic difficult.89% said they expect the virus to become endemic,"one that continues to circulate in pockets of the global population."
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