By Silvio Cascione Poll shows South American Slow Down, Argentina is seen as exception BRASILIA — The worst recessions in the world this year will take place in Latin America, with little room for policymakers to try and avoid them as global commodity prices flounder, a Reuters poll showed yesterday. Economists slashed growth forecasts for most of the region in a survey conducted January 8-13 compared with an October poll. Argentina was the exception as it was the only Latin American country in the poll to…