In response to an unprecedented outbreak of Marburg virus in Rwanda, the Centers for Disease Control and Prevention now plan to screen arriving international travelers for their risk of bringing the deadly Ebola-like disease into the country.

Amid an outbreak of Marburg virus in Rwanda, travelers coming into the United States who have been in Rwanda in the previous 21 days will be screened starting next week, the US Department of Health and Human Services announced Monday.

Marburg is among the deadliest pathogens known to humans, with Marburg virus disease (MVD) case fatality rates ranging from 24% to 88% in past outbreaks, depending on virus strain and case management. The first outbreak occurred in Marburg, Germany, in 1967. Since then, subsequent outbreaks have been mostly reported across Africa.