China requires a yellow fever vaccination if you have been in a yellow fever country. I am assured by the people I will be working with that there is no yellow fever in their area. But apparently there is some elsewhere in the country (Peru).
I won't know whether I am going to China until after I leave Peru. If I get the vaccination after leaving Peru when I find out I need to go to China, will China deny entry?
"only if you are arriving from a country with risk of yellow fever. This does not include the US." is on the CDC website. I could interpret it as meaning that if my itinerary is Peru, Spain, Romania, USA, China, then I don't need the vaccination. But I don't want to bet the cost of a plane ticket of that interpretation!