What is 'stealth Omicron BA.2'; is it really hard to track? All that you need to know
New Omicron sub-variant BA.2 is widely considered stealthier than the original version of omicron because particular genetic traits make it somewhat harder to detect.
Even as the Omicron COVID variant continues to puzzle us, another sub-strain of the variant - BA.2, also known as stealth Omicron, has emerged. This sub-variant has already spread across 50 countries including India. And experts suggest that BA.2 is only more contagious than the earlier detected but also harder to detect. So, should we be worried?