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Norovirus (NoV) contamination was evaluated in five rivers of Argentina between 2005 and 2011. NoV was present in all sampled rivers, with distinct NoV patterns in waters impacted by different-sized communities. In rivers affected by medium-sized populations (Salta and Córdoba cities) only one or two genotypes were present, GII.4 being the main one, with winter seasonality. In contrast, in the much...
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