Early evidence suggests there is an increased risk of re-infection with Omicron (previously reported in media as the Nu variant, or B.1.1.529). The variant can be detected using a ‘widely-used’ type of PCR test, without having to do genomic testing.
This is a companion discussion topic for the original entry at https://www.sciencemediacentre.co.nz/2021/11/27/who-labels-omicron-a-new-covid-variant-of-concern-expert-reaction/