The shortage of swine-flu vaccine results not from drug- company greed or outsize demand but almost entirely from the government's decision to pander to unfounded and unscientific fear. As The Wall Street Journal reported last week, the US government set out to have the H1N1 vaccine produced largely in single-dose syringes -- a demand that has set back production considerably, because multidose vials are far easier to make. And the only reason to seek single-dose production was to please people needlessly worried about the preservative thimerasol, which is used to provide multiple doses of the vaccine. The fear -- utterly...