RT Journal Article SR Electronic(1) A1 MMWR/WER, Collective YR 1998 T1 Rift Valley fever - East Africa, 1997-98 JF Weekly releases (1997–2007) VO 2 IS 15 SP 1232 OP DO https://doi.org/10.2807/esw.02.15.01232-en UL https://www.eurosurveillance.org/content/10.2807/esw.02.15.01232-en