ERRATUM
Volume 5, no. 6, doi:10.1128/mBio.02366-14, 2014. On page 2 (PDF), the seventh paragraph of the section headed “Risk Analysis” should read as follows: Putting all these numbers together, the select agent data suggest that a laboratory-year of experimentation on virulent, transmissible influenza virus might have an 0.01% to 0.1% chance of killing 20 million to 1.6 billion, or an expected death toll of 2,000 to 1.6 million fatalities per BSL3-laboratory-year. From the NIAID data, for each full-time person-year of BSL-3 work, we might expect a toll of between 8,000 and 10 million.