
Fast-mutating variants of the Omicron COVID-19 strain have made rapid tests for the virus much less accurate and liable to provide an inaccurate diagnosis in four out of 10 cases.
Doctors say the development is a major health dilemma.

Fast-mutating variants of the Omicron COVID-19 strain have made rapid tests for the virus much less accurate and liable to provide an inaccurate diagnosis in four out of 10 cases.
Doctors say the development is a major health dilemma.