1.explain you had affected hepatitis b , cured already basically nevertheless . should not carry virus , without infectivity.
说明你感染过乙型肝炎，不过已经基本治愈了。应该不携带病毒，无传染性。
2.For another reason, these birds are likely to carry virus, which will infect humans.
另一个原因，这些鸟儿可能携带病毒，并且可能会感染人类。
3.whether to carry virus to have without infectivity
是否携带病毒有无传染性？