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Omicron: What are the variant's symptoms?
Fox News
In just a matter of weeks, cases of the omicron COVID-19 variant have been detected in countries around the world – including the U.S. – forcing health leaders to take action.
The concern is that the highly mutated omicron can evade immune response – in addition to its transmissibility.
It is not certain where or when the variant first emerged, although Nigeria's national public health institute said Wednesday it had detected the variant in a sample it collected in October.
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