Which vaccine is the most effective single-dose vaccine in routine use against a virus with a famous rash?

The yellow fever vaccine is widely regarded as a highly effective one-dose vaccine. It is used for protection against yellow fever virus, a mosquito-borne disease that can cause severe liver disease and hemorrhage. In many immunization guidelines, one dose is considered sufficient for long-term protection in most healthy people. The vaccine is especially important for travelers to endemic regions and for residents in parts of Africa and South America.