NAGPUR: With fewer detection of Omicron variant among severely ill patients, doctors have warned that the Delta variant could still be in circulation. Samples of only a few in ICUs are testing positive in Omisure RT-PCR kits, which are said to guarantee detection of all Omicron lineages in RT-PCR tests. These were deployed after Omicron lineages, especially the BA.2 variant, skipped ‘S’ gene target failure (SGTF) RT-PCR run.
The district and civic authorities had procured SGTF kits on a large scale for Omicron surveillance in December-January. However, the strategy had to be tweaked after some samples showed BA.2 lineage and the administration procured Omisure kits.
