CDPH is also monitoring the variants of interest shown in the table below due to recent evidence that they might be more transmissible. Though they are known by two different lineage names, the B.1.427 and B.1.429 strains are closely related. Together, these two variants have been called the West Coast Strain. Because their clinical and epidemiologic significance is not yet known, CDC and CDPH do not consider them variants of concern at this time.
Known Variants of Interest in California
As of February 25, 2021
Variant | Number of Cases Caused by Variant |
B.1.427 | 1088 |
B.1.429 | 2771 |
Note: The cases identified above that have been sequenced are based on a sampling of all SARS-CoV-2-positive specimens and do not represent the total number or estimated proportion of cases that may be circulating in California. The number of California samples sequenced is the number of sequences submitted to GISAID and is not a complete list of all sequences completed to date. Numbers are updated on Thursdays by 12 noon but reflect data posted on GISAID the day prior.
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