Estimation results using the weekly excess influenza case data in 2009 over the weekly average of 2004-2008 by reporting date during weeks 5–9 for Mexico City and during weeks 5-14 for all of Mexico.

1Denoting turning point during week 7 (February 15–21).2Denoting turning point during week 9 (March 1–7).*max(0, lower bound).Note that the cumulative case number is rounded off to the nearest integer. The actual cumulative excess number K for weeks 5–9 in Mexico City is 100 and for weeks 5–14 is 226 in all of Mexico. R0 was computed using the mean estimated generation interval of T = 1.91 days (95% CI: 1.30–2.71), which was estimated from early Mexico novel H1N1 data in La Gloria before April 30, 2009 [3].