The flu strain that is spreading from Mexico and causing alarm about a possible pandemic has generally been called “swine flu” by health authorities, including the World Health Organisation.
But pig producers and animal health experts understandably dislike that term. Not only does it give pigs a bad name (and incidentally damage consumer demand for pork products) but also, they say, it is inaccurate.
In fact the H1N1 virus responsible for the outbreak has not been linked directly to pigs, in Mexico or anywhere else. The virus has not been isolated from any animal apart from humans, though virologists surmise that it may have originated in a pig.
Like birds and people, pigs can act as a “mixing vessels” in which different viruses swap genes and produce a new strain. The Mexican virus appears to contain porcine, avian and human genetic components.
The Paris-based animal health organisation OIE proposes calling it “North American flu”, to reflect its geographical origins. After all, the last pandemic, in 1968, was caused by “Hong Kong flu” – and the great 1918-19 pandemic was “Spanish flu”.
For me, North American flu is too much of a mouthful. I’d prefer “Mexican flu”.