The last outbreak of Yellow Fever in the United States occurred in New Orleans in 1905. 450 people died. Ed.
The following article was published on the ABC News site on 4/28/17
"Bringing answers to the global threat posed by yellow fever is a key commitment for Sanofi Pasteur. Sanofi Pasteur recognizes the challenge this supply disruption will cause for customers and for patients in need of yellow fever vaccine. We are making every effort to see that yellow fever vaccination continues in the U.S. during this YF-VAX vaccine supply disruption."