New COVID variant NB.1.8.1 is a VUM: What does it say about its severity, symptoms and transmission rate?

NB.1.8.1 is a VUM or variant under monitoring
COVID symptoms to watch out for
Persistent cough
Sore throat
Fatigue
Headache
Loss of appetite
Gastrointestinal issues
Blurred vision
Nausea or dizziness
Difficulty concentrating
Should you be concerned?
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