As a virus evolves to become more transmissible, it generally “loses” traits that are likely to cause severe disease, researchers said.
Researchers from Nference, a Cambridge, Mass.-based firm that analyzes biomedical information, sequenced omicron and found a snippet of genetic code that is also present in a virus that can bring about a cold. They say this particular mutation could have occurred in a host simultaneously infected by SARS-CoV-2, also known as the novel coronavirus, and the HCoV-229E coronavirus, which can cause the common cold.
The “striking” similarity between omicron and HCoV-229E could have made the former “more accustomed to human hosts” and likely to evade some immune system responses, said Venky Soundararajan, a biological engineer who co-wrote the study. “By virtue of omicron adopting this insertion … it is essentially taking a leaf out of the seasonal coronaviruses’ page, which [explains] … how it lives and transmits more efficiently with human beings,” he said.have established that SARS-CoV-2, which is responsible for the disease known as covid-19, can infect patients who are also afflicted by other coronaviruses.
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