1. I respect people's choices when it comes to vaccines, regardless of their rationales behind their decisions. With that said, I personally believe in getting all required and US CDC recommended vaccines. There are risks and side effects, some of which are higher for certain people and for those reasons, the CDC would not recommend a vaccine for people with specific characteristics. A common reason I hear for people not getting a vaccine or regret getting a certain vaccine is due to bad side effects they heard about or experienced themselves. I believe that most of these people who had bad side effects (with the exception of allergic reactions), would likely suffer even worse symptoms if they had the actual disease. So personally, I would rather a vaccine potentially keep me in bed for a couple of days than risk getting the disease that would hospitalize me, or worse. That's especially true for vaccines where the protection lasts a lifetime or for decades.
2. When the CDC 'recommends' a vaccine, I interpret that to mean people 'should' get it. If it says that it's 'required', then I interpret that to mean people 'must' get it. That's why in my previous post, I used the word "should" instead "must."
3. With regards to the Yellow Fever vaccine, CDC states: "Recommended for travelers ≥9 months old going to Corrientes and Misiones Provinces. Generally not recommended for travel to Formosa Province or to designated areas of Chaco, Jujuy, and Salta Provinces. Not recommended for travel limited to provinces and areas not listed above."