Do I really need to get a shot for Yellow Fever?

Do I really need to get a shot for Yellow Fever?
I am travelling to Columbia, South America in early December. In Columbia for about 9 days. I am never at an elevation below 1,411 metres.
Part of one day at 1,411 metres
3 days at 2,640 to 3,000 metres
5 days at 2,500 to 4,500 metres
I am a male, 63 years old in excellent health. I have read the chances of getting Yellow Fever is extremely small and even smaller due to the fact I am mostly at higher elevations. I have no interest in visiting the parts of Africa or South America where Yellow Fever is present in the future.

Age:63
Male
Medications: Vesicare ā€“ (Only side effect is some dehydration). Pill reduces number of times I urinate at night.