As far as health risks go, Argentina is a fairly safe country for visitors. That doesn’t mean, however, that it is free from all disease, or that visitors shouldn’t take advance precautions. It is always a good idea to buy at least a basic travel insurance plan to help in the event of sickness. Before traveling you can look to the International Association for Medical Assistance to Travelers, which provides up to date information on current health risks around the world, as well as assists in finding English speaking doctors in foreign countries.
Some of the things to watch out for while in Argentina include the obvious, such as sunburn or sunstroke, food and waterborne illness and altitude sickness, if visiting the 
Andes Mountains. These can be avoided by using general common sense; always wear sunscreen, drink only bottled water and avoid food sold on the street from cart vendors, and stay hydrated.
Other sicknesses that are a little harder to protect against include dengue fever, a blood borne illness carried by mosquitoes for which there is no vaccine. (Don’t forget your repellent!) Malaria is also present, although not common, as is yellow fever, which is even less common. There are vaccinations for both. Avoid contracting cholera by eating cooked foods and drinking only clean water.
By taking a few simple precautions, the Argentina Gringo has managed to stay disease free in South America and you can too!
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from my questions around BA, it seems like we could access the public health care system if we want… go to public hospitals even for non emergency health care… i have heard that the docs are very good, but equipment is old etc. and you might have to wait longer for test results etc… but time to wait in a line we have… any comments on this? thanks for your time… jamye