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The positive rate of positive avian infectious bronchitis viruses (IBV) in Real Time RT-PCR assay in unvaccinated backyard chick-ens in Mazandaran province, Iran, 2014.
| City | No. of. Samples | Positive (%) |
|---|---|---|
| Behshar | 5 | 60 |
| Sari | 10 | 30 |
| Jouybar | 10 | 30 |
| Neka | 10 | 50 |
| Nour | 7 | 42.8 |
| Babolsar | 5 | 40 |
| Ghaemshahr | 8 | 37.5 |
| Amol | 10 | 50 |
| Babol | 10 | 40 |
| Total & Average | 75 | 41.3 |
