Table 2.
Sequencing surveillance data from the UC Davis Health (UCDH) and genotyping surveillance data from Healthy Davis Together (HDT), showing when the Omicron variant overwhelmed Delta among COVID(+) patients in our region.
| Week of | 12/06/2021 | 12/13/2021 | 12/20/2021 | 12/27/2021 | 01/03/2022 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| UCDH | HDT | UCDH | HDT | UCDH | HDT | UCDH | HDT | UCDH | HDT | |
| Delta | 80% (4) | 97% (71) | 83% (10) | 57% (62) | 55% (6) | 20% (57) | 20% (3) | 5% (41) | 0% (0) | 2% (8) |
| Omicron | 20% (1) | 3% (2) | 17% (2) | 43% (46) | 45% (5) | 80% (222) | 80% (12) | 95% (835) | 100% (5) | 98% (433) |
Percentages are reported with total numbers of analyzed samples in parentheses.