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1046 One tiny mutation may explain how bat viruses become human threats

ScienceDaily
ScienceDaily · 06/23/2026 21:21 EDT

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 may help explain how some animal viruses make the leap to humans and become far more dangerous.

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