The World Health Organization has announced that PCR tests are still effective in detecting the new mutant of the Corona virus ‘Omicron’ saying studies are underway to measure the effectiveness of other tools in use to detect infection with the disease. However, the Al-Rai daily quoting sources said, no new mutant has caused such concern around the world, since the emergence of the mutant ‘Delta’. The World Health Organization does not yet know whether the Omicron is more easily transmitted than other mutants.