(ANSA) - ROME, JANUARY 28 - In Italy on January 17, the Omicron variant was predominant, with an estimated prevalence of 95.8%, with a regional variability between 83.3% and 100%, while the Delta was at 4.2% of the tested sample (range: 0% -16.7%).
These are the results of the rapid survey conducted by the Higher Institute of Health (Iss) and the Ministry of Health together with the regional laboratories and the Bruno Kessler Foundation.
For the investigation, the laboratories of the Regions and Autonomous Provinces were asked to select subsamples of positive cases and to sequence the genome of the virus.
The sample requested was chosen by the Regions / PPAA in a random manner from among the positive samples, guaranteeing a certain geographic representativeness and, if possible, for different age groups.
In total, all the Regions and Autonomous Provinces and a total of 124 regional laboratories and the Military Health Laboratory participated in the survey and 2486 samples were sequenced.
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