The U.S. Department of State issued a media advisory on 19 April 2019 in which it advised that travel advisories would be updated in the coming weeks which would result in about 80% (percent) of the countries of the world being placed into the highest level of concern - Level 4 - Do Not Travel.
The Department noted that ongoing advisories will take into account “logistical factors, including in-country testing availability and current travel restrictions for U.S. citizens.”
This adjustment brings the medical portion of the assessment more in line with that of the CDC existing epidemiological assessments.
Full notice: