Old detection methods don't work John Brownstein, a physician at the Boston Children's Hospital at Harvard University, has warned that the new subtype of the Omicron strain, BA.2, is harder to recognize than the original strain, BA.1. Discuss
For this reason, experts can no longer use the old method to quickly identify the omicron strain, since the new variant has a genetic feature that prevents it classification.
“The new BA.2 subvariant does not have this feature, so researchers can no longer use this fast method,” Braunstein explained.
Source: Abc