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Please note the Imperial County Public Health Department will be closed to all walk-in services for the public. Department staff will be available to provide assistance by phone to members of the community who have questions related to any of the Department’s essential services.

Phone assistance will be available Monday through Friday from 8:00 am to 12:00 pm and 1:00 pm to 5:00 pm. The office will be closed for lunch from 12:00 pm to 1:00 pm. This shall remain in effect until further notice.

Variant Report

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Variant Report (English)

Variant Report (Spanish)


For additional COVID-19 Variant information, visit Tracking Variants (

Multiple variants of the virus that causes COVID-19 have been identified globally during the COVID-19 pandemic. Variants are determined by their genetic sequences. It's important to understand that genetic mutations of the virus that causes COVID-19, SARS-CoV-2, are expected, and that there are many strains of the virus.  Public health, academic, and clinical partners are working together to sequence the genetic material of the virus in California. The term variants being monitored (VBM) is used to describe a variant for which there are data indicating a potential or clear impact on treatment or that has been associated with more severe disease or increased transmission but are no longer detected or are circulating at very low levels, and as such, do not pose a significant and imminent risk to public. The term variant of interest (VOI) is used to describe a newly emerging variant for which the medical and public health importance is not yet known. If a variant is thought to be more contagious or likely to cause greater illness or severe disease, or may impact treatment or vaccine response, then it is considered a variant of concern (VOC).  

  • B.1.617.2 (Delta) variants are associated with approximately 200% increased transmission. May have moderately decreased response to antibody treatments. (Delta totals include all Delta AY sublineages).