2022年12月29日

美国从中国旅行者需要负Covid测试美国将要求航空公司乘客来自中国显示负Covid-19测试作为全球担忧棘轮更高。时间8点是,2022年12月29日8时是,2022年12月29日8时是,2022年12月29日保存广告(彭博社)——美国将要求航空公司乘客来自中国显示负Covid-19测试作为全球担忧的病毒的传播棘轮以来高解除限制旨在消除感染。(彭博社)——美国将要求航空公司乘客来自中国显示负Covid-19测试作为全球担忧的病毒的传播棘轮以来高解除限制旨在消除感染。旅行者直接来自中国或在该国10天之前他们离开美国将不得不显示- PCR或冠状病毒抗原检测,联邦卫生官员周三说,不愿透露姓名的在与记者的电话。要求适用于所有乘客无论国籍或免疫状态,1月5日上午12:01生效。纽约时间。旅行乘客阳性10多天前可以提供文档和康复Covid代替消极的测试结果,官员们的电话会议上表示。航空公司需要确认的负面Covid测试或文档恢复前登机飞往美国。要求也适用于来自香港和澳门的旅行者。Covid以来一直在中国传播有增无减的政府取消其政策严格检疫和隔离暴露和感染人。 Almost 37 million people may have been infected with the virus on a single day last week, according to estimates from the Chinese government’s top health authority. The US Centers for Disease Control and Prevention will also expand its viral genomic surveillance program of travelers to two additional airports, bringing the total number collecting samples for sequencing to seven. Passengers boarding hundreds of flights from at least 30 countries are covered by the program. Transparency Concerns US health officials had been considering taking new coronavirus precautions for travelers from China amid concerns over lack of transparency around case data, Bloomberg reported earlier. US health experts are particularly concerned about the emergence of new variants that might not be picked up in testing in China, the officials said on the call. Health officials said they’ll continue to press China to release data and genome sequences of the virus. The high number of people affected over a very short period of time raises the chances of a new variant emerging, health officials said. China is submitting few sequences of the virus to an international database that tracks mutations, the officials said. New mutations can make the virus more transmissible or more deadly. For the past three years, Chinese officials have adhered to stringent rules around testing and quarantines that were often subject to international criticism. Earlier this month, after widespread protests against the restrictive policies, Chinese officials abruptly announced lifting of the restrictive policies without a plan for simultaneously boosting vaccination coverage. That’s allowed the virus to spread rapidly, filling health-care facilities with sick patients, most without immunity from vaccination or prior infections like the majority of people in other countries. More Testing Italian health authorities said earlier Wednesday that they will begin testing all arrivals from China for Covid after nearly half of passengers on two flights to Milan were found to have the virus. Countries such as Japan, Malaysia and India are also ramping up tracking and surveillance measures. Covid testing at US airports has tapered off as countries have abandoned pandemic-era travel restrictions. However, US health officials said that voluntary testing and sequencing at airports has continued and will be further expanded under a new effort to ramp up precautions amid the outbreak in China. When the Covid delta variant first emerged in late 2021, the CDC partnered with Ginkgo Bioworks Holdings and other companies to collect and sequence samples from travelers who arrived in the US from India. When omicron cropped up, that program was expanded. Today the majority of infections worldwide are from a slew of different omicron subvariants that mutated to become more transmissible and immune-evasive. Mutations can also make the virus deadlier, highlighting the importance of closely tracking them, and many antibody treatments have already been rendered ineffective by new variants. (Updates with additional context starting in eighth paragraph.) More stories like this are available on bloomberg.com ©2022 Bloomberg L.P.