i) Yellow Fever Requirements
All Trellers, including Singapore residents, with recent trel to countries with risk of yellow fever transmission (regardless of area, city or region) in the past six days prior to arrival in Singapore must produce a valid yellow fever vaccination certificate to the ICA officer upon arrival in Singapore. This requirement also applies to trellers who spent more than 12 hours in airport transit in these countries with risk of yellow fever transmission. For more information on yellow fever requirement, refer to Yellow Fever Vaccination Certificate.