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This interim guidance is based on what is currently known about the coronavirus disease 2019 (COVID-19). The Centers for Disease Control and Prevention (CDC) will update this interim guidance as needed and as additional information becomes available.
CDC is working across the Department of Health and Human Services and across the U.S. government in the public health response to COVID-19. Much is unknown about how the virus that causes COVID-19 spreads. Current knowledge is largely based on what is known about similar coronaviruses.
To prevent stigma and discrimination in the workplace, use only the guidance described below to determine risk of COVID-19. Do not make determinations of risk based on race or country of origin, and be sure to maintain confidentiality of people with confirmed COVID-19. There is much more to learn about the transmissibility, severity, and other features of COVID-19 and investigations are ongoing. Updates are available on CDC’s COVID-19 web page.