Apparently the swine flu is all the rage in London. This from Harper's Weekly:
Officials in Britain said that the number of new cases of swine flu in that country was doubling weekly and could reach 100,000 new cases per day by the end of August; Dr. Richard Jarvis, chairman of the British Medical Association's public-health committee, cited reports of people throwing "swine flu parties" to expose themselves to the virus and build their immunity. "I don't think it is a good idea," he said.
Here's my take (from The American Prospect):