Washington, Jun 30: Researchers in China have discovered a new type of swine flu that is capable of triggering a pandemic, according to a study published Monday in the US science journal PNAS.
Named G4, it is genetically descended from the H1N1 strain that caused a pandemic in 2009.
It possesses "all the essential hallmarks of being highly adapted to infect humans," say the authors, scientists at Chinese universities and China's Center for Disease Control and Prevention.
The researchers then carried out various experiments including on ferrets, which are widely used in flu studies because they experience similar symptoms to humans -- principally fever, coughing and sneezing.
G4 was observed to be highly infectious, replicating in human cells and causing more serious symptoms in ferrets than other viruses.
Tests also showed that any immunity humans gain from exposure to seasonal flu does not provide protection from G4.
According to blood tests which showed up antibodies created by exposure to the virus, 10.4 percent of swine workers had already been infected.
The tests showed that as many as 4.4 percent of the general population also appeared to have been exposed.
The virus has therefore already passed from animals to humans but there is no evidence yet that it can be passed from human to human -- the scientists' main worry.
"It is of concern that human infection of G4 virus will further human adaptation and increase the risk of a human pandemic," the researchers wrote.
The authors called for urgent measures to monitor people working with pigs.
"The work comes as a salutary reminder that we are constantly at risk of new emergence of zoonotic pathogens and that farmed animals, with which humans have greater contact than with wildlife, may act as the source for important pandemic viruses," said James Wood, head of the department of veterinary medicine at Cambridge University.
A zoonotic infection is caused by a pathogen that has jumped from a non-human animal into a human.
Comments
Condolences. The content of the news is correct. However his age is not 32. He was above 40. I know him very well. He was suffering from some psychological illness.
Dear Kuswanth,Please dont call chaddi,now changed chaddi and brought new langa,
Really very Sad News, My Heartiest Condolences, may his soul rest in peace. we are loosing young educated, energetic, citizens one by one, Where are you BJP, Bajrangi, Chaddi criminals, you have your Moral Police where are you Goons???? you Buffoon Dodanna fingering to our Great Bhatta no good, he is servant to Innocents, you are correct about him, once Investigation only the real culprit Identifying, but lost was lost, try to keep peace in the region,
Where are you Sharan Goon? go there man do some thing, looks you might be in Mysore to start Looting this is the time you Criminal looters do!!!!!
Jai hoo Siddaramanna.
No doubt this is a pre-planned murder some one has paid lumsum amount superior to kill Harish. Police must arrest first that Bhatta chassis and carry our fair investigation. For money prahakara will do anything.
Jai Ho Karnataka
Add new comment