| Years | PCV-2a single positive ratio | PCV-2b single positive ratio | PCV-2a/2b co-infected ratio | Total |
| 2009 | 50.00% (1/2) | 50.00% (1/2) | 0 (0/2) | 2 |
| 2010 | 12.50% (2/16) | 87.50% (14/16) | 0 (0/16) | 16 |
| 2011 | 23.08% (12/52) | 71.15% (37/52) | 5.77% (3/52) | 52 |
| Total | 21.43% (15/70) | 74.29% (52/70) | 4.29% (3/70) | 70 |