Scientists found that one tiny genetic change can completely alter how a coronavirus behaves in different species. Comparing SARS-CoV-2 with a closely related bat-only virus, they showed that a single amino-acid difference affects whether the immune system fights back or gets suppressed. This m...

Source: [ScienceDaily](https://www.sciencedaily.com/releases/2026/06/260622091434.htm)

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