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.
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True mr. hari. well said.
Hari says,
HDK working as bank lobby. By allow to write exams in local languages, attracts more people. For one bank exam, bank people charging minimum 500 to 600 as fee. Vacancy will be around 1 to 50. But the aspirant will be more than thousands. Bank people getting huge amount of revenew only by one bank exam... Bank people looting us and HDK working as bank lobby
HDK working as bank lobby. By allow to write exams in local languages, attracts more people. For one bank exam, bank people charging minimum 500 to 600 as fee. Vacancy will be around 1 to 50. But the aspirant will be more than thousands. Bank people getting huge amount of revenew only by one bank exam... Bank people looting us and HDK working as bank lobby
HDK wants to make young people less competative. In KN many foreign students studying. Our people should compete with them. But this will make people lazy
Aspirants minimum eligibility for most of the posts is degree or master degree. So they are capable of writing in English
Kumaraswamy wanted to make people fools.
For understanding questions, can give questions in own language but should not allow to write in local languages.
Rubbish. By giving allowing to write in own language makes people more lazy and less competative..
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