它们可以产生足够多的新病毒来训练免疫系统杀死并记住它们，所以人们只需要接种一次疫苗。
They can produce enough new viruses to train the immune system to kill and remember them, so people only need to take the vaccine once.
约两个月前，他们接受了第一次甲流疫苗接种；21天后，超过85%的志愿者对这种新型流感病毒菌株显示出了免疫力。
They got their first shot to test the vaccine about two months ago, and, after 21 days, more than 85 percent showed an immunity to this novel flu strain.
NEJM的一项研究还显示，许多美国老年人和1976年猪流感疫苗的接种者可能都已经对这种新病毒有了免疫力。
One of the NEJM studies also showed that many older Americans as well as recipients of the 1976 swine flu vaccine may already be protected against the new virus.
某人接种了疫苗或受到病毒感染后，其免疫系统就会产生抗体，主要攻击病毒表面被称为红血球凝聚素的蛋白质。
When someone is vaccinated or infected, the immune system makes antibodies that mostly attack a protein on the surface of the virus called hemagglutinin.
其目标是，提供一种能抑制所有季节性和流行性流感病毒的疫苗，像接种麻疹疫苗和小儿麻痹症疫苗那样为人们接种流感疫苗。即使不能保证终生免疫，也要保证在几年内为人类提供保护。
The goal is to provide protection for years, if not a whole lifetime, against all seasonal flu strains and pandemic strains, making flu inoculation much more like that for measles and polio.
在土库曼斯坦(有3例1型野生脊灰病毒病例)，2010年6月28日以来没有出现新的病例报告，已经完成了四轮大规模口服脊髓灰质炎疫苗免疫接种活动。
In Turkmenistan (three WPV1 cases), no new cases have been reported since 28 June 2010, and four mass OPV immunization campaigns have been completed.
只有我们感染了这种病毒或接种了灭活的疫苗才能产生相应抗体，因为这两种方法均可以让我们的免疫系统认识这种病毒。
And we will generate antibodies only if we get infected by the virus or vaccinated with a killed version of it; either way will teach the immune system what it looks like.
研究人员将10名天花疫苗接种者的免疫细胞以及另外10名未接种者的体细胞暴露在艾滋病病毒环境中。
In this small study, the researchers exposed immune cells from 10 smallpox-vaccinated people to HIV. Cells from 10 people never vaccinated against smallpox were also exposed.
假如您是孕妇，您的宝宝应该在出生时分别注射乙肝疫苗和乙肝病毒的免疫球蛋白，并在随后的日子里完成全套乙肝疫苗接种。
If you are pregnant, your newborn baby must be given 2 injections( first dose of hepatitis B vaccine and hepatitis B immune globulin) at birth and then complete the whole hepatitis B vaccination.
假如您是孕妇，您的宝宝应该在出生时分别注射乙肝疫苗和乙肝病毒的免疫球蛋白，并在随后的日子里完成全套乙肝疫苗接种。
If you are pregnant, your newborn baby must be given 2 injections( first dose of hepatitis B vaccine and hepatitis B immune globulin) at birth and then complete the whole hepatitis B vaccination.
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