1918 and 2009 H1N1 Flu Probably Not Spread by Birds
2010 01 21

From: ScienceDaily.com


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
Images: Source




Related Articles
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

Sweden’s submarine war against Germany – Rear-Admiral confesses to armed robbery
2014 04 15
On April 8, 2014, Swedish combat forces stormed the HQ of German submarine builder Thyssen’s offices in Sweden and walked away with blueprints for the next generation submarine A26. Immediately after the event, the head of security at Thyssen was fired. Aside one or two initial reports about what in effect was an armed robbery, a blanket of silence has been put ...
Black Ring Above England: New Evidence
2014 04 15
New explanations for the ’black ring’ as seen in England this week have been submitted by members since we highlighted the case. [Experts baffled after strange black ring appears in sky above England] As otherworldly a phenomenon it seems to be, it’s almost certainly due to very worldly reasons. Officials are still stumped as to the origin of the ring as recorded by ...
Sars Research Lab Loses 2,000 Tubes of Killer Virus
2014 04 15
A prestigious research institute in France said it had lost thousands of tubes of samples of the deadly Sars coronavirus. A routine inventory check at Paris’ Pasteur Institute revealed that 2,349 tubes containing fragments of the virus responsible for the deaths of 774 people in 2002 were missing, the centre named after French chemist Louis Pasteur said. The institute was quick to ...
10 odd facts about Abraham Lincoln’s assassination
2014 04 15
It was 149 years ago tonight the President Abraham Lincoln was shot while watching a play at Ford’s Theater. Lincoln died the next morning, and in the aftermath, some odd facts seemed to pop up. Why wasn’t General Ulysses S. Grant in the theater box with Lincoln, as scheduled? Where was the President’s bodyguard? How many people were targeted in ...
Dag Hammarskjöld Assassination: Plane may have been shot down
2014 04 15
Newly declassified 1961 cable called for grounding of Belgian mercenary hours after UN secretary general crashed in Africa Hours after a plane carrying the UN secretary general, Dag Hammarskjöld, crashed over central Africa in September 1961, the US ambassador to Congo sent a cable to Washington claiming that the aircraft could have been shot down by a Belgian mercenary pilot. In the ...
More News »