Table 1. ELISA results for the presence of influenza A virus antibodies in guinea pigs from different regions of Ecuador*.
| Region | No. (%) positive, by antigen† |
||||||
|---|---|---|---|---|---|---|---|
| H1 | H3 | H5 | NP | N1 (Cal09) | N1 (Vietnam04) | N2 | |
| Cuenca, n = 20 | 11 (55) | 12 (60) | 6 (30) | 16 (80) | 8 (57)‡ | 8 (57)‡ | 10 (71) |
| Guayaquil, n = 10 | 8 (80) | 5 (50) | 8 (80) | 10 (100) | 8 (88)§ | 8 (88)§ | 8 (88)§ |
| Manabí, n = 10 | 1 (10) | 1 (10) | 0 | 3 (30) | 1 (50)¶ | 1 (50)¶ | 0¶ |
| Total | 20 | 18 | 14 | 29 | 17 | 17 | 18 |
*Samples were from adult guinea pigs raised as livestock on local farms (Cuenca) or from live animal markets (Guayaquil and Manabí). H1, recombinant hemagglutinin from A/California/04/2009 (Cal09); H3, recombinant hemagglutinin from A/Wisconsin/67/2005; H5, recombinant hemagglutinin from A/Vietnam/1203/2004 (Vietnam04); NP, recombinant nucleoprotein from A/Brisbane/10/2007; N1, recombinant neuraminidase from Cal09 or Vietnam04; N2, recombinant neuraminidase from A/Hong Kong/1/1968. †Serum samples were considered positive if absorbance (read at 405 nm) was higher than the value of the negative control (naive guinea pig serum) +3 SD. ‡Only 14 samples were tested. §Only 9 samples were tested. ¶Only 2 samples were tested.