看你去哪。如果只是Guayaquil,Quito和GPS,或是海拔高于2300,都不推荐。
http://wwwnc.cdc.gov/travel/yellowbook/2012/chapter-3-infectious-diseases-related-to-travel/yellow-fever-and-malaria-information-by-country/ecuador#5441Ecuador, including the Galápagos IslandsYellow FeverRequirements: Required for travelers ≥1 year of age arriving from a country with risk of YFV transmission.a Nationals and residents of Ecuador are required to possess certificates of vaccination on their departure to an area with risk of YFV transmission.Recommendations: Recommended for all travelers ≥9 months of age traveling to the following provinces east of the Andes Mountains <2,300 m in elevationd: Morona-Santiago, Napo, Orellana, Pastaza, Sucumbios, and Zamora-Chinchipe (see Map 3-19).Generally not recommended for travelers whose itinerary is limited to the following provinces west of the Andes and <2,300 m in elevationd: Esmeraldas, Guayas, Los Rios, Manabi, and designated areas of Azuay, Bolivar, Canar, Carchi, Chimborazo, Cotopaxi, El Oro, Imbabura, Loja, Pichincha, and Tungurahua (see Map 3-19).Not recommended for travelers whose itineraries are limited to all areas >2,300 m in elevation,d the cities of Guayaquil and Quito, or the Galápagos Islands (see Map 3-19).