Michael Specter writes about science and global public health for The New Yorker. His new book, Denialism: How Irrational Thinking Hinders Scientific Progress, Harms the Planet, and Threatens Our Lives, has just been published by The Penguin Press.

The hysteria over the swine-flu vaccine—and not just the virus itself—is a public health disaster and the latest example of America’s irrational thinking, says Michael Specter.