Experts fear escape of 1918 flu from lab

October 22, 2004 | Source: News

The 1918 flu virus spread across the world in three months and killed at least 40 million people. If it escaped from a lab today, the death toll could be far higher because people born after 1918 have little or no immunity.

Yet despite the danger, researchers in the US are working with reconstructed versions of the virus at less than the maximum level of containment.