I think that's unnecessary.
Well if, and it is still a very big if, swine flu turns into a pandemic, it won't be the first time an outbreak of flu has caused mayhem across the world. The 1918 Spanish flu pandemic infected around a third of the world's population, killing at least 50 million people. Although, at the outset, few realised quite how lethal it would prove.
The Times - May 31st 1918
The Spanish ambassador in London stated yesterday that the epidemic which has broken out in Spain is not of a serious character. The illness presents the symptoms of influenza with slight gastric disturbance.