美国调查了在安全审查中可能与死亡有关的COVID-19疫苗。 U.S. investigates possible COVID-19 vaccine links to deaths amid safety review.

美国正在调查一些可能与COVID-19疫苗有关的死亡事件,因为卫生官员正在调整监测政策。 The U.S. is investigating a number of deaths potentially linked to COVID-19 vaccines, as health officials adjust monitoring policies. 该探测器是在对疫苗安全协议进行更广泛审查时进行的,尽管尚未建立明确的联系。 The probe comes amid a broader review of vaccine safety protocols, though no definitive connection has been established. 当局正在通过已建立的监测系统审查各种报告,以评估任何可能的风险。 Authorities are reviewing reports through established surveillance systems to assess any possible risks.