The data on this page show how variants of the virus that causes COVID-19 are spreading in NYC. Variants are versions of the virus with certain sets of mutations. Some variants may result in a COVID-19 infection that is easier to spread, more severe or able to avoid antibodies from vaccines or previous infections.
The current dominant variant of COVID-19 in NYC is an omicron subvariant called XBB.1.5. This subvariant is the most transmissible form of COVID-19 that we know of to date. It may be more likely to infect people who have been vaccinated or previously had COVID-19 compared to prior variants. We do not know yet whether XBB.1.5 may cause more severe disease. Getting the COVID-19 vaccine — including the updated booster — is still the best way to protect yourself from hospitalization and death from COVID-19, including from these new variants.
Note: To help with reference, the World Health Organization (WHO) has assigned Greek letters to variants, such as delta (B.1.617.2) and omicron (B.1.1.529).
These charts show the percent and number of tested cases each week over the past three months that have the most common variants in New York City, including delta and omicron.
These charts show the percent of NYC's confirmed COVID-19 cases that have been tested for virus variants and reported to the Health Department over the past three months, and the total number tested each week.
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About Health Inequities in Data: Differences in health outcomes and vaccination coverage among racial and ethnic groups are due to long-term structural racism, not biological or personal traits.