More than 152 million doses of influenza vaccine have been distributed.

现在医生至少已经开出了1.52亿剂流感疫苗。

Moderna already tested an influenza vaccine, which was an mRNA vaccine, two years before.

莫德纳生物技术公司早在两年前就已经测试了一种流感疫苗，那是一种mRNA疫苗。

The other thing is that influenza vaccine doesn't work as well against H3N2 strains, so that's probably a second factor.

另外还有一个原因是，流感疫苗未能很好对抗H3N2毒株，所以这可能是第二个原因。

The acellular pertussis vaccine and influenza vaccine (in shot form) are examples of subunit vaccines.

无细胞百日咳疫苗和流感疫苗（注射形式）是亚单位疫苗的例子。

Until the universal influenza vaccine is available, more lives can be saved if more people start getting the imperfect seasonal flu vaccine.

如果在通用流行性感冒病毒疫苗研制出之前，更多的人开始接种不完全季节性流感疫苗的话，就会有更多的生命得到挽救。

One study in humans found that influenza vaccines given in the morning triggered a stronger response than one administered in the afternoon, suggesting immunity has a daily, or circadian, hythm.

一项针对人类的研究发现，早上接种的流感疫苗比下午接种的流感疫苗引发的反应更强，这表明免疫力有每日或昼夜节律。