FIG. 2.

Distribution of types A, B, and F in soils from five geographical regions of Argentina. Type A was detected in 269 positive samples (41.9% from the west region, 20.6% from the northwest region, 20.2% from the central region, 13.8% from the south region, and 3.4% from the northeast region). Type F was detected in 18 positive samples (50.0% from the west region, 33.3% from the northwest region, 11.1% from the central region, and 5.56% from the south region). Type B was detected in 72 positive samples (48.6% from the central region, 29.2% from the south region, 18.1% from the west region, and 4.1% from the northwest region).