**Global Health Officials Sound Alarm on ‘Stealth’ Omicron Variant**.
**Introduction**.
The World Health Organization (WHO) and other global health organizations have raised concerns about a new sub-variant of the Omicron strain of COVID-19, known as BA.2, due to its increased transmissibility and potential to evade immunity..
**Stealth Omicron Variant (BA.2)**.
BA.2, also known as the .
