The Omicron variant is advancing rapidly in Italy (on January 3 it was 81%) but patchy in the regions. According to the final results of the rapid survey conducted by the Higher Institute of Health and the Ministry of Health, together with the regional laboratories and the Bruno Kessler Foundation, there is a “regional variability between 33% and 100%”. But where is it more widespread? Read also By now in Basilicata on the Covid front only the Omicron variant of Sars-CoV-2 circulates. Delta cleared. The mutant first reported from South Africa takes the stage. Delta did not surrender only in the Aosta Valley, where it maintains a prevalence of 66.7% and Omicron is stuck at 33.3%. And its decline appears slower in the Autonomous Province of Bolzano, where there has been overtaking (Omicron is at 54.2%), but Delta is holding a slice of 41.7%. Omicron’s advance is less rapid than elsewhere also in Friuli Venezia Giulia (64.6%, Delta 35.4%) and in Veneto, where the new variant is at 66.1% and Delta at 33.9%. Italy the scenario is that of a clear and decisive climb, at different speeds but now a consolidated reality. If out of 535 positive Lucanian samples, 11 were sequenced and all were Omicron. Delta is already below 10% in 4 Regions: in addition to Basilicata, it happens in Molise where Omicron is at 97.8% and Delta at 2.2%, in Umbria where it has dropped to 6.7% and Omicron is at 93 , 3%, in Puglia where Omicron is at 91.9% and Delta at 8.1%. Close to 90% of Omicron there are also Tuscany (89.2%), and Lombardy (88.7%). Lazio sees Omicron at 85.4% and Delta now a minority at 14.6%. In the Marche Omicron is 82%, in Sardinia 83.3%. Remain below 80%, but not too far, Emilia Romagna (79.4%), Sicily (78.8%), Abruzzo (77.8%), Piedmont (76.8%), Liguria (76.7 %), Autonomous Province of Trento (76%), Calabria (71.4%) and Campania (70.9%).