初恋这件小事

The Biden administration is eyeing mid-September for the rollout of updated COVID-19 vaccines, according to Food and Drug Administration and Centers for Disease Control and Prevention officials.

“Vaccination is going to continue to be key this year because immunity wanes and because the COVID-19 virus continues to change,” an official said on a call with reporters. “For those reasons, vaccines remain the best protection against hospitalization and death.”

It’s the first time that vaccines for all three of the major fall and winter viruses – flu, COVID-19 and respiratory syncytial virus – will be available.

The announcement comes as COVID-19 hospitalizations are increasing and the Biden administration hopes to get ahead of any potential fall or winter coronavirus wave with its vaccine campaign.

Moderna, Pfizer and Novavax have developed updated coronavirus vaccines that will target the XBB.1.5 strain, which was responsible for less than 5% of new infections in recent weeks, according to CDC data.

The dominant strain circulating now is EG.5 – nicknamed “eris” – that is causing over 20% of new cases.

Eris appears more transmissible and better able to evade immunity provided by vaccines and previous infection, according to the World Health Organization, but it hasn’t been associated with more severe disease.

Another variant to watch is BA.2.86, which quickly caught the attention of both WHO and the CDC. The highly mutated strain is likely not responsible for the recent rise in hospitalizations in the U.S., according to the CDC, but it is too soon to know the new strain’s transmissibility or severity.

Officials believe the updated shots will work against these strains.

“FDA expects that once available, the updated vaccines will similarly provide protection against the most serious outcomes of the disease that may result from currently circulating variants,” one of the officials said.

The CDC’s committee of outside vaccine experts will meet in mid-September to recommend who should get the updated COVID-19 vaccines. The officials noted that for some people, including older or immunocompromised Americans, more than one shot per year may be needed.

原标题：AirPods Pro 2值得等待吗？这款不到1K售价的旗舰耳机更值得入手近期讨论度最高的无疑是苹果全家桶更新了，全新的iPhone 14系列、全新苹果手表S8系列以及时隔多年之后更新的AirPods Pro 2。其中AirPods Pro 2相比起16号发售的产品更慢，要9月23日才能开售，而1899的定价可以说是“加量不加减价”的策略，让不少用户心动。媲美苹果的交互体验对于苹果手机的用户而言，AirPods Pro 2可以闭眼入，该耳机基于H2芯片带来了比较全面的使用体验提升，在降噪能力、续航能力、音质效果、通话降噪、遗失查找等方面对比上一代均有明显提升，再加上苹果生态的强大，体验必定会有所更新。并且在细节的创新上，还有安卓阵营最先加入的滑动调节音量的交互体验，这次在AirPods Pro 2上也得到了体现。（AirPods Pro 2）当然如果你是安卓用户，那么不建议你等苹果耳机。

二 | 从上文也能知道，AirPods Pro 2产品体验固然出色，但安卓阵营中的旗舰级TWS耳机同样也有值得借鉴的地方。

三 | 比如滑动调节音量功能，OPPO Enco X第一代产品就已经做到了领先，在今年推出的OPPO Enco X2产品中，还可以实现耳机按压控制拍照的辅助功能，而在语音交互方面，OPPO Enco X2支持小布语音助手的直接语音唤醒，只需要发出语音指令，即可实现暂停播放、上/下一首、加/减音量等常规操作，这也解放了双手。（OPPO Enco X2）TWS耳机的音质天花板当然在音质表现力方面，OPPO Enco X2是目前TWS行业中的天花板级别产品。OPPO具体的动作是，继续强化与北欧高端Hi-Fi音响品牌丹拿的合作，联合开发了SuperDBEE第二代同轴双单元结构，配合全新开发的平面四磁高音结构，大大加强了这款旗舰TWS耳机产品的低、中、高音质表现。（OPPO Enco X2）并且在音质调优方面，OPPO保持了与丹拿品牌的合作，还邀请了著名音乐大师久石让参与调音。“久石让大师调音”让OPPO Enco X2的声音表现更加清淡自然，还原了真实的听感，这与“白开水”音质的AirPods Pro 2拉开了差距。

四 | 值得一提的是，OPPO Enco X2还有着优秀的传输协议，升级到了LHDC4.0，这也能让声音细节得以充分保留，还原出最纯粹的音乐品质。（OPPO Enco X2调音界面）降噪体验同样领先值得注意的是，降噪能力提升至2倍后，AirPods Pro 2的降噪也是很值得期待的，而在安卓阵营，大厂对降噪的质量要求也越来越高，比如小米Buds Pro能够把降噪做到48dB。而作为旗舰降噪耳机的OPPO Enco X2也做到了行业领先水准，其搭载了两颗行业罕见的高信噪比降噪麦克风、搭配三核降噪芯片、超宽频超深度主动降噪与防风噪钢网设计，降噪深度最高可达45dB。同时还能够一对一的定制个性化降噪曲线，这也提升了不同用户的佩戴降噪体验。而OPPO Enco X2最高能实现40小时的续航时长，全程开启降噪也能有22小时左右的时间，这样的续航也是领先很多TWS产品。并且其目前售价为799元，在不到1K的售价中做到了音质、降噪、续航、交互等方面的全面领先，OPPO Enco X2也很值得我们大众消费者入手的。返回搜狐，查看更多责任编辑：