Yellow Fever: Is Once a Lifetime Enough?

A recent article in the Journal Lancet, Long-term immunity against yellow fever in children vaccinated during infancy: a longitudinal cohort study, calls into question the 2013 World Health Organization (WHO) decision that a single dose of Yellow Fever vaccine is required for life-long immunity. Until 2013, the requirement was for a dose every 10 years…

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Yellow Fever: A Disease to Know

As of 2013, Yellow Fever killed 78,000 people annually in Africa with a total of 130,000 severe cases. It is still considered endemic in 34 African and in 13 South American countries. There were 11 cases imported to China from Angola in 2016, potentially exposing a large and unvaccinated population in China. These Yellow Fever…