reemergence of yellow fever: detection of transmission in the state of s+úo paulo, brazil, 2008. | following yellow fever virus (yfv) isolation in monkeys from the s+úo jos+® do rio preto region and two fatal human autochthonous cases from the ribeir+úo preto region, state of s+úo paulo, brazil, two expeditions for entomological research and eco-epidemiological evaluation were conducted. | 2011 | 21739073 |