We've been told that a new regulation is now in place regarding entry documents for arrivals into Ecuador. Anyone who enters the country  as a tourist must now have public or private health insurance for the duration of their stay in Ecuador. If you cannot provide proof of such insurance, the immigration agent has the power to deny you entry into the country.  

So, be ready to show any travel medical insurance documents you may have - and if you haven't purchased any, you might want to show your national health card or something similar.   

I do find it hard to believe that people without such documents will now be systematically turned back upon arrival - but it doesn't hurt to be ready to show the immigration clerk the right piece of paper (or plastic).