美国报告有31例禽流感病例 没有证据表明人与人之间的传染 31 human cases of bird flu reported in the US, no evidence of transmission between humans.

密苏里州官方报告 调查后 人类之间没有禽流感传播的证据 Officials in Missouri report no evidence of bird flu transmission between humans following an investigation. 疾控中心证实华盛顿州有两起人类病例,使美国总数达到31起。 The CDC confirmed two human cases in Washington state, bringing the total in the U.S. to 31. 尽管病例有所增加,但卫生当局坚持认为,没有迹象表明病毒在人与人之间传播。 Despite the increase in cases, health authorities maintain that there is no indication of person-to-person spread of the virus.