This is the best tl;dr I could make, original reduced by 60%. (I’m a bot)
WASHINGTON – 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 U.S. science journal PNAS. Named G4, it is genetically descended from the H1N1 strain that caused a pandemic in 2009.
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 antibodies created by exposure to the virus, 10.4% of swine workers had already been infected.
“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.