Table 2. Distribution of antibody titers against equine and avian influenza viruses among Mongolian participants, 2008–2011.
| Titer | A/Equine/Mongolia/01/2008(H3N8) | A/Teal/Hong Kong/w312/97(H6N1) | A/Hong Kong/1073/1999(H9N2) | A/Migratory duck/Hong Kong/MPD268/2007(H10N4) | ||||||||
| 0 mo | 12 mo | 24 mo | 0 mo | 12 mo | 24 mo | 0 mo | 12 mo | 24 mo | 0 mo | 12 mo | 24 mo | |
| <1∶10 | 435 | 348 | 339 | 438 | 362 | 349 | 435 | 359 | 347 | 438 | 363 | 349 |
| 1∶10 | 3 | 11 | 5 | 1 | 1 | 3 | 3 | 2 | 1 | |||
| 1∶20 | 1 | 4 | 3 | 1 | 1 | 1 | 1 | |||||
| 1∶40 | 4 | 1 | ||||||||||
0 mo = enrollment; 12 mo = 12 month annual follow-up; 24 mo = 24 month annual follow-up.