As with swine flu, however, the new strain has been identified as having "all the essential hallmarks of a candidate pandemic virus."
The new strain of flu should be monitored closely, scientists say.
Scientists have identified a new strain of flu carried by pigs in China that they say has the potential to become a pandemic.
The new strain is descended from the type of flu — known as "swine flu" — that emerged in 2009 causing the first global flu pandemic in 40 years.
The scientists published their peer-reviewed findings in U.S. science journal Proceedings of the National Academy of Sciences on Monday. They said the new strain of flu, which they called "G4 EA H1N1," is a variation of swine flu, and includes the "G4″ genotype that has become predominant in swine populations since 2016.