In the Letter to the Editor entitled “Prevalence of TB in healthcare workers in south west London” which appeared in the November issue of Thorax (2004;59:1002–3) the name of one of the authors was incorrectly spelt. The authors’ names should have appeared as follows: T B L Ho, C F J Rayner, T Lindfield, Y Young, and R J Whitfield. The publishers apologise for this error.