[Comment] Yellow fever vaccine minimum fractional dosing does not extend to infants

00:00 - 13 Jan 2026

Yellow fever vaccine was among the first successful human vaccines to be invented and has been in use for over 80 years. The vaccine is made by culture in eggs, a process with limited capacity that cannot be rapidly scaled up in response to outbreaks. The global stockpile of yellow fever vaccine for outbreak response is 6 million doses.1 In 2016, during yellow fever outbreaks in Angola and the Democratic Republic of the Congo, the global stockpile of yellow fever vaccine was almost exhausted twice.