Omicron in Nevada

Omicron makes up 93 % of cases in Nevada.

The most prevalent known Omicron variants are BA.5, BA.2, BA.2.12 and BA.2.12.1.

Read more about our sequencing process.

Genomic Sequencing of SARS-CoV-2 in Nevada

The figure below shows the prevalence the following Omicron variants: BA.5, BA.4, BA.3, BA.2, BA.2.12, BA.2.12.1, and XE. The BA.5 variant is expected to have greater immune evasion ability.

The figure below shows the genetic evolution of SARS-CoV-2 over time. Double click on a legend item to isolate it. Single click on a legend item to drop it. Double click on the background of the figure to reset it. Click and drag to zoom. Drag the x axis to change the time period shown. Please note that counts are consolidated by week.

The figures below show the top 5 lineages sequenced in Nevada over the past 5 days. It's possible that fewer than 5 lineages were sequenced in the past 5 days. Go to our Variants page for further specifics.

This table shows the proportion of cases sequenced in Nevada. The data are from GISAID. We cannot sequence all of the positive cases in Nevada because of things like sample degradation, there not being enough virus in a sample, etc.

Reported cases Samples sequenced Percentage of cases sequenced
Nevada 758,577 37,105 4.9%
United States 85,673,612 3,500,709 4.1%
Globally 543,323,528 11,585,609 2.1%

This nested pie chart shows the percentage of samples sequenced in Nevada broken down by county, lineage, and sub-lineage. To isolate a county or lineage, click on its slice.

These figures reflect samples sequenced in the past week. Click on a county to see the percentage breakdown of the Omicron and Delta lineages. Some counties don't have any specimens that were sequenced in the past week.

Omicron Delta Other
Clark 100% - -
Washoe 98% - 3%
Lyon 100% - -
Carson City 100% - -
Elko 100% - -
Douglas 100% - -
Nye - - -
Churchill 100% - -
Humboldt - - -
White Pine 100% - -
Pershing 100% - -
Lander - - -
Lincoln 100% - -
Mineral 100% - -
Storey - - -
Eureka - - -
Esmeralda - - -

Further Sequencing Information

DNA sequencing shows us the order of the As, Gs, Cs, and Ts (bases) in a genome. This information can tell us what type of organism something is, and by comparing many genomes, we can figure out what it is related to. COVID-19 has many lineages, meaning there are many different orders of the As, Gs, Cs, and Ts. Sequencing lets us distinguish between, for example, the Delta and Omicron lineages. When variants are genetically close, they form a lineage. For example, the AY.1 & AY.2 variants are both part of the Delta lineage. Sometimes when mutations happen, they can change the order of the bases in a way that changes the characteristics of the organism. For COVID-19, some of these mutations could result in an increase in transmission rate or an increase in disease severity.

We use next-generation sequencing to look at the genomes of COVID-19 viruses sent to NSPHL. We use pangolin software to assign the most likely lineage. We can sequence about 200 samples per day. Sequencing can only be successful if there is enough of the virus present in the sample. This means we cannot sequence everything we receive. We cannot sequence at-home tests or rapid antigen tests. Please keep these considerations in mind when looking through this data.

Sequencing COVID-19 gives us important information on how to fight it. Sequencing gives us insight into how the virus is evolving, and what we need to consider when designing vaccines, prescribing treatments, and deciding on public policy.