Yellow fever (YF) is an acute viral hemorrhagic infectious disease caused by the Yellow Fever virus. There has been a dramatic increase in disease incidence in the past 15 years. In Kenya, several outbreaks have been reported between 1992-1995 and imported cases in 2018. In 2022, Isiolo County reported 15 suspected cases of yellow fever-like illness and 6 cases have died. The Ministry of Health identified several counties neighboring Isiolo County to be at the highest risk of YF outbreak. 