Our mortality pandemic rates were more conservative than those estimated using linear models of 2009 Argentina pneumonia and influenza mortality data (8.4/100,000py (95% CI 6.5-10.3/ 100,000py) a method that is not well suited to differentiate the impact of influenza from that or RSV [9] . Our estimates are similar, however, to age-adjusted influenza A(H1N1)pdm09associated respiratory and cardiovascular rates for the southern cone countries (2.1-4.0/100,000py) [8] . Indeed, our estimates were similar to those of diverse countries such as Bangladesh (4/ 100,000py) [9] and subpopulations within the United States (0.9-3.7/100,000py) [9, 10] .