The News story 'Biodefence lab criticized' ( Nature 460, 556–557; 2009) conflated two different foot-and-mouth disease outbreaks in Britain. The 2001 outbreak required the slaughter of 6 million animals; a 2007 outbreak originated from the animal-research lab in Pirbright.

The News story 'Flu jabs urged for developing countries' ( Nature 460, 156–157; 2009) incorrectly stated that Abdullah Brooks has determined that one-third of pneumonia deaths in children younger than 2 years old in Bangladesh can be attributed to the influenza virus. In fact, he has determined that about one-third of children who get influenza develop pneumonia, of whom about two-thirds are less than two years old.