Yellow Fever Vaccine Potency Wanes Over Time
SEATTLE — A single-dose of vaccine for yellow fever (YF-VAX strain 17D-204) is touted as offering lifelong protection, but the jab’s potency was reduced over time, researchers reported. In blood samples from 22 flavivirus-naïve individuals that were vaccinated for yellow fever within the last 10 years, 9% were 17D seronegative, and almost all (n=21/22) were […]