This article is from the source 'bbc' and was first published or seen on . It will not be checked again for changes.
You can find the current article at its original source at http://news.bbc.co.uk/go/rss/-/1/hi/health/5385894.stm
The article has changed 4 times. There is an RSS feed of changes available.
| Version 2 | Version 3 |
|---|---|
| 1918 flu virus's secrets revealed | 1918 flu virus's secrets revealed |
| (about 18 hours later) | |
| An experiment to reconstruct the deadly 1918 flu virus has given a new insight into how the infection took hold. | An experiment to reconstruct the deadly 1918 flu virus has given a new insight into how the infection took hold. |
| Scientists discovered a severe immune system reaction was triggered when mice were infected with the recreated virus. | Scientists discovered a severe immune system reaction was triggered when mice were infected with the recreated virus. |
| The US team believes the extreme immune response could have provoked the body to begin killing its own cells, making the flu even deadlier. | The US team believes the extreme immune response could have provoked the body to begin killing its own cells, making the flu even deadlier. |
| The study, published in Nature, may aid the hunt for new treatments. The 1918 pandemic took about 50 million lives. | The study, published in Nature, may aid the hunt for new treatments. The 1918 pandemic took about 50 million lives. |
| The host's immune system may be overreacting and killing off too many cells Dr John KashUniversity of Washington | The host's immune system may be overreacting and killing off too many cells Dr John KashUniversity of Washington |
| The devastating infection, which is thought to have originated in birds, left young adults worst hit. | The devastating infection, which is thought to have originated in birds, left young adults worst hit. |
| Scientists in the US have reconstructed the H1N1 virus in a bid to better understand how it became such an effective killer - and to also bolster knowledge in the face of the current H5N1 bird flu threat. | Scientists in the US have reconstructed the H1N1 virus in a bid to better understand how it became such an effective killer - and to also bolster knowledge in the face of the current H5N1 bird flu threat. |
| The researchers infected mice with the recreated influenza virus. | The researchers infected mice with the recreated influenza virus. |
| Through functional genomic analysis, they discovered that the mice's immune systems responded fiercely to the infection and remained active until the animals' deaths several days later. | |
| At the same time, the animals also suffered the severe lung disease that is characteristic of the virus. | At the same time, the animals also suffered the severe lung disease that is characteristic of the virus. |
| Understanding H5N1 | Understanding H5N1 |
| Dr John Kash, lead author of the study and assistant professor of microbiology at the University of Washington, said: "What we think is happening is that the host's inflammatory response is being highly activated by the virus, and that response is making the virus much more damaging to the host. | Dr John Kash, lead author of the study and assistant professor of microbiology at the University of Washington, said: "What we think is happening is that the host's inflammatory response is being highly activated by the virus, and that response is making the virus much more damaging to the host. |
| "The host's immune system may be overreacting and killing off too many cells, and that may be a key contributor to what makes this virus more pathogenic." | "The host's immune system may be overreacting and killing off too many cells, and that may be a key contributor to what makes this virus more pathogenic." |
| Dr Christopher Basler, a co-author from Mount Sinai School of Medicine, New York, said: "Our next step is to repeat these experiments, but deconstruct what the immune system is doing so that we can understand why it is reacting so strongly, yet failing to fight the infection." | Dr Christopher Basler, a co-author from Mount Sinai School of Medicine, New York, said: "Our next step is to repeat these experiments, but deconstruct what the immune system is doing so that we can understand why it is reacting so strongly, yet failing to fight the infection." |
| The researchers said understanding how the virus worked would help in the fight against influenza. | The researchers said understanding how the virus worked would help in the fight against influenza. |
| It is very important to study the 1918 flu to understand the current avian flu virus Paul HunterUniversity of East Anglia | It is very important to study the 1918 flu to understand the current avian flu virus Paul HunterUniversity of East Anglia |
| Dr Basler said: "This could help us develop more targeted therapies to combat pathogenic infections, including different types of influenzas or perhaps avian influenza." | Dr Basler said: "This could help us develop more targeted therapies to combat pathogenic infections, including different types of influenzas or perhaps avian influenza." |
| Paul Hunter, professor of health protection from the University of East Anglia, UK, said: "People who have died from the current form of bird flu have died in the same sort of fashion as the people who died during the 1918 pandemic. It is an extraordinarily unpleasant death. | Paul Hunter, professor of health protection from the University of East Anglia, UK, said: "People who have died from the current form of bird flu have died in the same sort of fashion as the people who died during the 1918 pandemic. It is an extraordinarily unpleasant death. |
| "Clearly, the difference between the virus now and the one around in 1918 is that the current one has yet to develop the ability to spread swiftly from person to person. | "Clearly, the difference between the virus now and the one around in 1918 is that the current one has yet to develop the ability to spread swiftly from person to person. |
| "It is very important to study the 1918 flu to understand the current avian flu virus." | "It is very important to study the 1918 flu to understand the current avian flu virus." |