Efficacy test of chicken infection bronchitis bivalent livingvaccine was taken with the method of serum cross neutralization. The results showed that it was consistent with that of challenge method.
以血清交叉中和方法进行鸡传染性支气管炎双价活疫苗效力检验，结果与攻毒方法效检结果一致。
2
The vaccine is at least 10 years away, and in the meantime everyone needs prevention and people living with HIV need access to anti-retroviral treatment.