和其它的流感病毒一样,猪流感病毒也是在不断变化的。
Several subtypes of Type A flu viruses cause avian influenza.
Influenza viruses circulating in animals pose threats to human health.但最近从猪分离出来的流感病毒大部分都是H1N1型病毒。
Most of the recently isolated influenza viruses from pigs have been H1N1 viruses..
Flu viruses change each year.Combinations with other parts of speech
The new swine flu virus infecting humans is very unusual.但最近从猪分离出来的流感病毒大部分都是H1N1型病毒。
Recently isolated influenza viruses are mostly H1N1.和其它的流感病毒一样,猪流感病毒也是在不断变化的。
Swine flu viruses, like all other influenza viruses, change constantly.
Avian flu refers to a large group of different influenza viruses that primarily affect birds.
Luckily, this year's flu was relatively mild.
Three types of influenza virus can infect humans.
Certain types of influenza viruses causes avian flu.
There are three types of influenza virus that can infect humans.
Three forms of sporotrichosis can infect people.
There are three different types of influenza viruses that infect humans.
The pig carried a seemingly harmless strain of influenza.
Catechins, in particular, may protect against certain types of influenza virus.
Bacterial tracheitis is a rare complication of influenza infection.但最近从猪分离出来的流感病毒大部分都是H1N1型病毒。
However, most of the recently isolated influenza viruses have been the H1N1 viruses..不过,在最近从猪身上分离得到的流感病毒中,大部分都是H1N1型病毒。
However, most of the recently reported influenza viruses from pigs have been H1N1 viruses..这就是所有细菌的流感病毒如何进化成耐药性或获得一些生存所需的新酶功能。
This is how flu viruses of all the bacteria evolve to become drug resistant or gain some new enzymatic function that it needs to survive.不过,在最近从猪身上分离得到的流感病毒中,大部分都是H1N1型病毒。
However, most of the recently isolated influenza viruses have been the H1N1 viruses..健康官员表示,今年的流感病毒的疫苗目标目前会使人生病。
Health officials have said this year's vaccine targets the flu viruses that are currently making people sick.多数的流感病毒株感染力不高,受感染的个体也只会继续传染个一两个人。
Most influenza virus strains are not very infectious and each infected individual will only go on to infect one or two other individuals.年横扫了全世界的流感病毒导致了20%的被感染者死亡,估计杀死了5000万人。
The flu virus that swept across the world in 1918 killed up to 20 per cent of those infected, causing an estimated 50 million deaths.年,一种从未被发现过的流感病毒开始在中国的家禽中传播。
In 2013, an influenza virus that had never before been detected began circulating among poultry in China.这就是所有细菌的流感病毒如何进化成耐药性或获得一些生存所需的新酶功能。
This is how flu viruses of all the bacteria evolve to become drug resistant or gain some new enzymatic function.和其它的流感病毒一样,猪流感病毒也是在不断变化的。
Like all influenza viruses, the swine flu viruses are also in a constant state of change.