I will be traveling from Ecuador to the United States with a short airport-only stopover in Panama (not passing immigration). I will not be in any areas with a risk of yellow fever transmission, and therefore do not need the vaccine for medical reasons, but I understand Panama has certain requirements for proof of vaccination if you're coming from a country where the disease is present. Where do I find an official description of Panama's requirements from a government source?
There are many third-party websites and forums that contain information, but I haven't seen anything official from the government.
The CDC seems to say proof of vaccination is required, since Ecuador is a YF risk country: "Required if traveling from a country with risk of YF virus transmission and ≥1 year of age, including transit >12 hours in an airport located in a country with risk of YF virus transmission."
However, Timatic's health database seems to say the requirement applies only to travelers from Brazil: "Vaccination against yellow fever required if arriving from Brazil."
And Panama's embassy contradicts both of those sources, saying "You do not need a yellow fever vaccine to travel to Panama."
In addition, if I possess an official certification on my Yellow Card that the vaccine is contraindicated since I'm not at risk of exposure (signed and stamped by the appropriate public health authorities in the US), is that sufficient?
I have seen the experience in Traveling to Ecuador with a layover in Panama. Do I need Yellow Fever vaccine?, and clearly the Embassy is an official agency, but I'd like an additional official Panamanian government source if one exists (Spanish language is fine), while that question focuses on Ecuador (I am not transiting Panama on my way to Ecuador).