“…aegypti in cities near the YF sylvatic transmission and the possibility of infected people, especially tourists, to move during incubation and viraemia periods to cities highly infested by Ae. aegypti increase chances of contact between this mosquito and YF virus and the risk of urban transmission of the disease in Brazil and other South American countries (Vasconcelos et al 1999, 2001, Forattini 1999, Prata 2000. Although infected people may be bitten by Ae.…”