I was in Buenos Aires most of the time from December 2002 to early 2007. I also visited Cordoba and Iguasu. I was never well in Argentina, perhaps a "2". The closest place to Argentina where I was well was in the Brazilian city of Foz do Iguacu, near Iguazu Falls.
From Paul Beith Triple Frontier (Where Paraguay, Brazil and Argentina meet) Foz do Iguazu (Igazu Falls) Score: 5 I was not well on anywhere on the Argentina side of the border. Even at the falls, I was only so-so. Yet, on the Brazilian side, I am well when it is not rainy. However, I cannot rule out that the brevity of my good health here was not due to unrelated factors. Was there about a week each time, 3 times. Better than usual