| bluetongue infection rate in mithun (bos frontalis) in the north-eastern upland region of india. | studies conducted on 106 mithun at the national research centre on mithun and 66 free-ranging mithun in nagaland, india, revealed an infection rate with bluetongue virus of 86%, using a commercially available competitive enzyme-linked immunosorbent assay. animals were grouped according to their age: 36 of 1 to 2 years of age, 50 of 2 to 4 years of age and 86 aged 4 years and over. the highest infection rate (98%) was found in mithun > 4 years old and the lowest (58%) in those 1 to 2 years old. n ... | 2008 | 19284059 |