First they infected the pigs, now the cats
Those filthy disease ridden primates (homo sapiens) having been spreading pestilence left right and center. First they infect poor innocent pigs, and now a cat has caught swine flu. In Egypt they slaughtered the entire pig population because they were afraid they'd spread swine flu (with a bunch of unforeseen consequences which shows they didn't listen to Heinlein's warning about the dangers of indiscriminately killing hogs (and dragons)). When everyone was worried about Chicken Flu, they slaughtered two million chickens in Holland at least 1.4 million in Hong Kong, plus at least 80,000 in India, another 35,000 in England and who knows how many world-wide? Well, now those dirty primates have started spreading a flu virus across species, what are we going to do about it? Filthy creatures.
