CDC 研究发现 H5N1 在兽医中无声传播，引发了监测担忧。 CDC study finds silent H5N1 transmission in veterinarians, raising surveillance concerns.

CDC 最近的一项研究发现，每 150 名兽医中就有 3 名具有 H5N1 禽流感抗体，但没有表现出症状，这表明从动物到人类的传播是无声的。 A recent CDC study found that three out of 150 veterinarians had antibodies to H5N1 bird flu without showing symptoms, indicating silent transmission from animals to humans. 这表明该病毒的传播范围可能比报告的要广泛，因为感染者可能不会寻求医疗护理。 This suggests the virus may be spreading more widely than reported, as infected individuals may not seek medical care. 该研究强调了加强监测的必要性，并强调了处理病鸟或死鸟的人的预防措施。 The study highlights the need for better surveillance and emphasizes precautions for those handling sick or dead birds.