The outbreak of the mosquito-borne disease began in late September following an intense rainy season.
Rift Valley fever is a mosquito-borne disease that primarily affects livestock.
The vaccine elicited both antibody and cellular immune responses.
All but 46 of the confirmed cases have been in Senegal.
Senegal's Rift Valley fever outbreak now has 302 confirmed cases.
So far there have been 277 confirmed cases and 22 deaths in Senegal's Rift Valley fever outbreak.
Rift Valley fever cases are rising in both people and animals in Senegal and Mauritania.
A seventh young child in Israel, a 1-year-old, has died this year from measles.
Officials have reported 293 suspected cases in 6 states alongside outbreaks of the disease in goats.
The efficacy of malaria vaccine RTS,S/AS01 in infants and children is sustained for up to 7 years after vaccination, according to an extension study published Jul 9 in The Lancet Infectious Diseases following a previous phase 3 study.
