The World Health Organization, the United Nations health agency, uses a system of six phases to warn of possible influenza pandemics.

VOA: special.2009.05.06

Viruses, you know about viruses; variola, we're going to talk about next week which causes smallpox, influenza, which causes the flu and HIV of course which cause AIDS are some examples.

病毒 你们都知道病毒,像天花病毒,我们下周会讲的引起天花的病毒,还有引起流感的流感病毒,引起艾滋病的人类免疫缺陷病毒等等

耶鲁公开课 - 生物医学工程探索课程节选

His team is also attempting to produce new food oils and make synthetic parts of every known influenza virus.

VOA: special.2010.07.20

Evidence is increasing that common influenza viruses are becoming resistant to the main drug used to treat them.

VOA: special.2009.03.04

They have been used to study cancer,AIDS,genetic testing, and drugs for illnesses including influenza,herpes and Parkinson's disease.

VOA: special.2010.07.21

The current spread of a swine influenza virus has added to these concerns.

VOA: special.2009.07.14

Next comes using them to develop drugs to fight and treat influenza.

VOA: special.2009.03.04

Meanwhile,expedited efforts are going forward on several continents to develop an effective vaccine for the new strain of influenza.

VOA: standard.2009.04.30

Each year,scientists work to develop a unique influenza vaccine to protect people against the strain expected in the coming flu season.

VOA: standard.2010.07.21

Now,a team of U.S.scientists think they're on track to developing a "universal" vaccine that will protect people against all kinds of influenza.

VOA: standard.2010.07.21

The nation's fragile public health system also is struggling to cope with a rising number of influenza cases.

VOA: standard.2009.09.14

Operations for people were postponed because facilities and medical practitioners were preoccupied and needed to serve influenza like diseases or flu in particular,".

VOA: standard.2009.09.04

The worst may be over,". "But,it would be unwise for anybody to reach firm conclusions before April, when the normal influenza season usually ends.

VOA: standard.2010.01.18

The new virus led to patterns of death and illness not normally seen in influenza infections.

VOA: standard.2010.04.29

"I think it is too premature and too early for us to say we have come to an end of the pandemic influenza worldwide,".

VOA: standard.2009.12.29

The news reports are likely to further crimp Mexican tourism, already in a downturn after the emergence of the swine influenza A-H1N1 virus in Mexico in April.

VOA: standard.2009.06.09

In the United States, the number of confirmed influenza cases continues to rise, but most flu sufferers report relatively mild symptoms, and only one death has been recorded.

VOA: standard.2009.05.03

This is welcome news for U.S.health officials, who initially had to consider the possibility that the new flu strain's impact could mirror the devastation of the 1918 influenza pandemic that led to tens of millions of deaths worldwide.

VOA: standard.2009.05.03

The first step uses a bit of influenza DNA to get the patient's immune system to begin fighting off the flu, and then the protection is given a "boost" some time later by the second step, which can be either another bit of DNA or a conventional flu vaccine.

VOA: standard.2010.07.21

"It does not really matter because in the best case scenario we have today,we will still have a moderate virus that is projected to cause several million deaths extra deaths than the usual influenza annual mortality, which means that even in the best-case scenario, we do have an emergency on our hand,"

VOA: standard.2009.09.04

"Influenza is unpredictable," There is no way to determine how it is going to react among any one person or group of people, so for those reasons, people cannot really account for what is going to happen if they go into a situation with the intention of getting H1N1."

VOA: standard.2009.12.18