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2. New York State Department of Health. COVID-19 data in New York: COVID-19 variant data. Albany, NY: New York State Department of Health; 2023. https://coronavirus.health.ny.gov/covid-19-variant-data
3. World Health Organization. XBB.1.5 rapid risk assessment, 11 January 2023. Geneva, Switzerland: World Health Organization; 2023. https://www.who.int/docs/default-source/coronaviruse/11jan2023_xbb15_rapid_risk_assessment.pdf
4. New York City Department of Health and Mental Hygiene. COVID-19: data: variants. New York, NY: New York City Department of Health and Mental Hygiene; 2023. https://www.nyc.gov/site/doh/covid/covid-19-data-variants.page