Table 1. Time of the most recent common ancestors for the Mexico H7N3 virus.
| Gene | TMRCAa | Most closely related strainb |
| HA | 20/3/2012 (29/11/2011, 23/5/2012) | A/north shoveler/Missouri/2010 (H7N3) |
| NA | 4/1/2012 (10/8/2011, 23/4/2012) | A/American green-winged teal/Illinois/2010 (H2N3) |
| PB2 | 30/10/2011 (8/6/2011, 25/2/2012) | A/mallard/California/198/2012 (H11N9) |
| PB1 | 10/10/2011 (10/10/2010, 28/1/2012) | A/American green-winged teal/California/123/2012 (H1N1) |
| PA | 18/11/2011 (3/7/2011, 26/3/2012) | A/American green-winged teal/California/123/2012 (H1N1) |
| NP | 21/1/2012 (16/8/2011, 5/5/2012) | A/American green-winged teal/Mississippi/2012 (H11N9) |
| M | 2/11/2011 (7/0/2011, 2/5/2012) | A/American green-winged teal/Illinois/2008 (H10N7) |
| NS | 25/10/2011 (25/3/2011, 17/1/2012) | A/American green-winged teal/Illinois/2010 (H10N7) |
a
Time of the most recent common ancestors (TMRCA) of each segment of the novel Mexico H7N3 virus are represented in the order of date/month/year. The values in parentheses represent the 95% HPD intervals.
b
The strains are identified are those most closely related to the outbreak strains in each tree phylogeny in this study.