NIH警告北美严重H5N1禽流感病例,突出人与人之间的传染风险。 NIH warns of severe H5N1 bird flu cases in North America, highlighting human-to-human transmission risks.

NIH领导人敦促采取更多行动, 对抗北美H5N1禽流感病例加速增加, NIH leaders are urging more action against the accelerating H5N1 bird flu cases in North America. 一个具有温和先前存在状况的加拿大青少年病情严重,突出表明了病毒的潜在严重性和对人类的适应性。 A Canadian teenager with mild pre-existing conditions became critically ill, highlighting the virus's potential severity and adaptability to humans. 多数病例涉及接触受感染的动物或生奶,但病毒的突变使人们担心人与人之间的传染。 Most cases involve exposure to infected animals or raw milk, but the virus’s mutations are raising concerns about human-to-human transmission. 由于不完全报告动物感染情况,监测工作受到阻碍。 Surveillance efforts have been hindered by incomplete reporting of animal infections.