With 46 countries reporting large measles outbreaks, the Centers for Disease Control and Prevention is tightening guidance for American travelers.
“Many international destinations are reporting increased numbers of cases of measles,” warns the agency.
The CDC now recommends Americans consult their physicians six weeks before travel instead of only a month prior, as late 2023 guidance suggested.
Travelers also risk infection if they do not get a measles-mumps-rubella vaccination at least two weeks before their trip.
“The majority of measles cases imported into the United States occur in unvaccinated U.S. residents who become infected during international travel,” the CDC said.
Most nations at the greatest risk of illness — which can stay airborne or on a surface for up to two hours — are in Africa, Asia, the Middle East, and Eastern Europe, per the CDC.
Russia and Malaysia are recent entries on the list, according to US News and World Report.
The US has also seen an uptick in measles cases over the winter.
As of March 14, 58 cases of measles have been reported this year in the US — the same number for all of 2023, per the CDC.
17 jurisdictions, including NYC, reported measles: Arizona, California, Florida, Georgia, Illinois, Indiana, Louisiana, Maryland, Michigan, Minnesota, Missouri, New Jersey, Ohio, Pennsylvania, Virginia, and Washington.
Symptoms include rash, high fever, cough, runny nose, and watery red eyes.