1918 and 2009 H1N1 Flu Probably Not Spread by Birds
2010 01 21
The two strains of the H1N1 influenza virus responsible for the 1918 and 2009 global flu pandemics do not cause disease in birds. The results of the study, published in the February issue of the Journal of General Virology, also show it is unlikely that birds played a role in the spread of the H1N1 virus in these pandemics.
Scientists from the Canadian Food Inspection Agency's National Centre for Foreign Animal Disease (NCFAD) in Winnipeg, Canada, together with collaborators in the USA, injected the 2009 and 1918 H1N1 virus strains individually into chickens. None developed flu symptoms or showed any signs of tissue damage up to18 days later, although about half the chickens developed antibodies against the 1918 H1N1 virus showing limited infection. The 1918 H1N1 virus also did not cause disease in ducks.
The origin of the 1918 H1N1 virus is unknown and despite its genetic similarity to avian influenzas, the results of this study show it is unlikely to have jumped the species barrier from chickens to humans.
Different strains of influenza cause disease in humans, birds and pigs; each type of virus is adapted to cause infection in its host. All cause similar respiratory symptoms. If flu viruses are passed back and forth between hosts (e.g. through close human contact with infected animals) the mixing can lead to development of a novel strain. As they have not encountered the virus before, the human population has little or no immunity to a novel strain which can easily cause infection and spread from person to person. This may ultimately lead to a global flu pandemic.
Dr Shawn Babiuk, a scientist with the National Centre for Foreign Animal Disease who led the research, said, "Working out how major human pandemic flu viruses affect birds and other domestic animal species is crucial in discovering what role, if any, they play in spreading viruses in the human population." Such studies can inform government decisions in responding to outbreaks of influenza in birds, which have major implications for poultry producers. According to Dr Babiuk, "These findings support the use of normal veterinary management practices in poultry infected with pandemic 2009 H1N1 influenza and demonstrate that quarantining and culling infected stocks is not necessary."
Dr Babiuk explained that viruses can behave unpredictably. "Our understanding of exactly how influenza viruses go on to cause pandemics is still limited," he said. "Although our research indicates that birds are unlikely to have played a part in the spread of the 1918 and latest 2009 H1N1 pandemic viruses, they may well still play a part in future pandemics."
Article from: ScienceDaily.com
Swine flu jumps again - to turkeys in Chile - but scientists see no dangerous mutation yet
WHO to stop using term 'swine flu' to protect pigs
The 'False' Pandemic: Drug Firms Cashed in on Scare over Swine Flu, Claims Euro Health Chief
Joseph Moshe (MOSSAD Microbiologist): “Swine flu vaccine is bioweapon”
Hey, whatever happened to swine flu?
Obama Administration Launches Deceptive Swine Flu Propaganda Blitz
"Swine Flu" Hysteria: Cat Gets H1N1?! (Video)
Ottawa councillor wants military to conduct swine flu vaccinations
Avian Swine Flu created by the CIA (Video)
David Icke: ‘Don’t Take The Swine Flu Vaccine’ (Video)
Previous Swine Flu Outbreak Originated At Fort Dix
Latest News from our Front Page
DARPA’s mirror-killing membrane could change astronomy, allow total global surveillance
2013 12 06
When it launches in 2018, the James Webb Space Telescope will let us see deeper into the universe than ever before. Its enormous eye is centered around 18 octagonal mirrors which assemble to form the largest telescope mirror ever built, but someday even the James Webb Telescope (formerly the Next-Gen Space Telescope) will outlive its usefulness — and then what ...
The Nightwatchman: Crime-predicting robot aims to patrol our streets and schools
2013 12 06
Get Ready. They’ll be watching.
These new robots that are an unnerving mix between Star Wars’ R2-D2 and Doctor Who’s Daleks, are being touted as the new way to "monitor, map, and secure" the humans around them.
The robots are purported to replace security guards and watchmen, in a bid to reduce labor costs and streamline surveillance.
A company in California ...
Microsoft’s Smart Bra Will Monitor Mood & Reduce Overeating
2013 12 06
Microsoft is designing a “smart bra” that will monitor women’s health by tracking their heart rate, her emotional state, whether or not she is over-eating and more.
Sensors in the bra detect when the wearer is bored, stressed or discouraged and send a warning signal to the woman’s smartphone that she should caution from making bad food choices.
In a paper entitled, ...
“Saint” Mandela? Not So Fast!
2013 12 06
President Barack Obama has compared him to George Washington. MSNBC’s Chris Matthews heralded him as “perhaps the world’s greatest hero.”
The Las Vegas Guardian Express dispensed with the “perhaps,” declaring in headline: “Nelson Mandela World’s Greatest Hero.”
Others have christened him “the greatest man of the 20th century.” Many revere him as “the savior” of South Africa. School children worldwide read books, ...
The Legacy of Nelson Mandela: A Dissenting Opinion
2013 12 06
Nelson Mandela, rights activist, political icon and former president of South Africa, dies age 95
There is no doubt that Nelson Mandela suffered for his cause of an end to bloody apartheid, racial segregation and government oppression in South Africa:
[Mandela was a] South African anti-apartheid revolutionary as well as a politician and philanthropist who served as President of South Africa ...
|More News » |