Partially immune population like China’s puts pressure on the virus to change, say experts
Could the COVID-19 surge in China unleash a new coronavirus mutant on the world?
About three years ago, the original version of the coronavirus spread from China to the rest of the world and was eventually replaced by the delta variant, then omicron and its descendants, which continue plaguing the world today. One big unknown is whether a new variant will cause more severe disease. Experts say there’s no inherent biological reason the virus has to become milder over time.
Given those realities, Dr. Gagandeep Kang, who studies viruses at the Christian Medical College in Vellore, India, said it remains to be seen if the virus will follow the same pattern of evolution in China as it has in the rest of the world after vaccines came out. “Or,” she asked, “will the pattern of evolution be completely different?”
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