国产新冠疫苗保护期到底有多长？权威回应来了
<p><br/></p><p style="margin: 0px 0.5em;text-align: center;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">国产新冠疫苗保护期到底有多长？</p><p style="margin: 0px 0.5em;text-align: center;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">这是很多人心中的疑问</p><p style="margin: 0px 0.5em;text-align: center;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">日前</p><p style="margin: 0px 0.5em;text-align: center;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">国家卫健委副主任曾益新</p><p style="margin: 0px 0.5em;text-align: center;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">给出了最新权威回答</p><p style="margin: 0px 0.5em; color: rgb(0, 0, 0); letter-spacing: 1px; font-size: 16px; line-height: 1.75;" mpa-paragraph-type="body"><br/></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">“疫苗的保护作用不单纯是靠抗体。<strong style="margin: 0px 0em;text-align: left;color: rgb(0, 0, 0);letter-spacing: 0px;font-size: 16px;line-height: 1.75;">我们的免疫保护，主要是靠免疫记忆，也就是免疫系统记住了这个病毒。</strong>”曾益新介绍，<strong style="margin: 0px 0em;text-align: left;color: rgb(0, 0, 0);letter-spacing: 0px;font-size: 16px;line-height: 1.75;">目前，国产新冠疫苗免疫记忆的时间，肯定不止半年，也许能够持续几年</strong>，是不是能够持续终身还要持续观察。</p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body"><br/></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">曾益新表示，尽管病毒在不断变异，但仍然在我们的防控范围之内，一旦新冠病毒变异超出防控范围，将对疫苗进行升级。</p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body"><br/></p><p style="margin: 0px 0.5em; text-align: center; color: rgb(0, 0, 0); letter-spacing: 1px; font-size: 16px; line-height: 1.75; padding: 0px;" mpa-paragraph-type="image"></p><p style="margin: 0px 0.5em; color: rgb(0, 0, 0); letter-spacing: 1px; font-size: 16px; line-height: 1.75; padding: 0px;" mpa-paragraph-type="image"><br/></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">此前，科兴控股生物技术有限公司董事长尹卫东表示，“我可以肯定地告诉大家，<strong style="margin: 0px 0em;text-align: left;color: rgb(0, 0, 0);letter-spacing: 0px;font-size: 16px;line-height: 1.75;">现在中国的灭活疫苗，两针完成免疫以后，在我们体内已经建立起免疫记忆。</strong>”</p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body"><br/></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">尹卫东介绍，我们最近已经完成了二期临床研究，就是打完两针剂次的志愿者，<strong style="margin: 0px 0em;text-align: left;color: rgb(0, 0, 0);letter-spacing: 0px;font-size: 16px;line-height: 1.75;">在隔三个月六个月之后接种第三针，抗体可以迅速地在一周内跳到十倍，半个月就可以达到二十倍的这样一个研究。</strong>但是我们要在真实世界的研究过程中观察，两针疫苗持续保护效果有多长。</p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body"><br/></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">就中国来讲，其实完成两针免疫是对所有的公众最重要的工作。尹卫东说，“你完成两针免疫体内已经产生了免疫记忆，什么时候需要第三针，请给我们研究人员一段时间，我们会在半年、一年进行详细的研究测试，然后我们再建议国家，应该在什么时候加强第三针。”</p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body"><br/></p><p style="margin: 0px 0.5em; text-align: center; color: rgb(0, 0, 0); letter-spacing: 1px; font-size: 16px; line-height: 1.75;" mpa-paragraph-type="image"></p><p style="margin: 0px 0.5em; color: rgb(0, 0, 0); letter-spacing: 1px; font-size: 16px; line-height: 1.75;" mpa-paragraph-type="image"><br/></p><p style="margin: 0px 0.5em; color: rgb(0, 0, 0); letter-spacing: 1px; font-size: 16px; line-height: 1.75;" mpa-paragraph-type="image"></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">我国新冠疫苗从去年开始布局，截至目前，已有20款疫苗进入临床试验。其中，4款疫苗获批国内附条件上市，3款疫苗获批国内紧急使用，8款疫苗在国外获批开展三期临床试验，3款疫苗在西方发达国家获批开展一期临床试验，1款mRNA疫苗获得国外三期临床的伦理批复。<strong style="margin: 0px 0em;text-align: left;color: rgb(0, 0, 0);letter-spacing: 0px;font-size: 16px;line-height: 1.75;">“在疫苗的研发数量方面，我国处在世界的第一方阵。”</strong></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body"><strong style="margin: 0px 0em;text-align: left;color: rgb(0, 0, 0);letter-spacing: 0px;font-size: 16px;line-height: 1.75;"><br/></strong></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">与此同时，我国疫苗接种已开启“加速模式”，从1亿剂次到7亿剂次，每增加1亿剂次接种所需要的时间，从25天缩短到16天，到9天再到7天，再到5天。自4月26日起，中国的疫苗接种剂次也赶超美国，位居世界第一。</p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body"><br/></p><p style="margin: 0px 0.5em;text-align: justify;color: rgb(0, 0, 0);letter-spacing: 1px;font-size: 16px;line-height: 1.75;" mpa-paragraph-type="body">截至2021年6月7日，31个省（自治区、直辖市）和新疆生产建设兵团累计报告接种新冠病毒疫苗79413.4万剂次。</p><p mpa-paragraph-type="body"><br/></p><section style="max-width: 100%; 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