An outbreak of the Coronavirus on the U.S. mainland is imminent, according to officials with the Center for Disease Control (CDC).

As of February 25, 53 cases have been diagnosed, 39 of which concern Americans who have been repatriated from abroad. Approximately 2,500 people have died from the virus worldwide, the majority of who are Chinese.

“It’s not so much of a question of if this will happen in this country any more [sic] but a question of when this will happen,” said Dr. Nancy Messonnier, the director of the National Center for Immunization and Respiratory Diseases (NCIRD).

The CDC is gearing up to defend the country against the deadly virus. And U.S. health officials seem quite aggressive in their protective measures.

The health agency stated that “the U.S. government and public health partners are implementing aggressive measures to slow and contain transmission of COVID-19 in the United States.”

Almost 500 CDC staff members, who have been trained on the Coronavirus, have been deployed to 39 high-threat locations both in the U.S. and abroad. In addition, the CDC has set up quarantine stations at various ports of entry, to include the country’s busiest airports plus the 11 airports were all flights from China are being redirected to. Any individuals suspect of carrying the virus are subjected to a 14-day quarantine.

The Center for Systems Science and Engineering (CSSE) of the Johns Hopkins University has created an interactive dashboard where you can track the disease as it spreads across the world. This image portrays the spread of the virus in the U.S. as of 2/25.