Correction
==========


**Bertozzi SM**, Padian N, Martz TE. Evaluation of HIV prevention programmes: the case of Avahan. [Sex Transm Infect 2010;86:i4–5](http://sti.bmj.com/lookup/doi/10.1136/sti.2009.039263). There were several errors in this editorial. Reference 9 referred to an unpublished paper by Vickerman, not to the paper by Pickles, which was published in the same supplement.

Secondly, the statement “Finally Ramesh *et al* came closest to examining the impact of Avahan on FSW using dynamic transmission models. They used prevalence from two cross-sectional surveys….” is incorrect. Ramesh does not use a dynamic transmission model—this is referring to one of the two modelling papers. Ramesh uses a time-trend analysis from two cross sectional surveys.

Finally, the name Alary is misspelled Alery twice in the editorial.

The journal apologies for these errors.