Table of contents

Epidemiology

• Pregnancy and contraceptive use among women participating in an HIV prevention trial in Tanzania (21 March, 2012)

  Aderonke Odutola, Kathy Baisley, Richard J Hayes, Mary Rusizoka, Clare Tanton, Helen A Weiss, John Changalucha, David A Ross, Deborah Watson-Jones
• Prevalence of HIV among men who have sex with men in Chongqing, China, 2006–2009: cross-sectional biological and behavioural surveys (28 March, 2012)

  Yanqi Zhang, Pinyi Chen, Rongrong Lu, Ling Liu, Yazhou Wu, Xiaoyu Liu, Zengwei Zhao, Dong Yi
• Decline of the new Swedish variant of Chlamydia trachomatis after introduction of appropriate testing

  (27 April, 2012)

  Kenneth Persson, Berit Hammas, Håkan Janson, Carina Bjartling, Joakim Dillner, Lena Dillner
• Male IDUs who have sex with men in England, Wales and Northern Ireland: are they at greater risk of bloodborne virus infection and harm than those who only have sex with women? (23 May, 2012)

  Andrea Marongiu, Vivian D Hope, John V Parry, Fortune Ncube
• A cross-sectional survey of attitudes to HIV risk and rapid HIV testing among clients of sex workers in Switzerland (24 May, 2012)

  Katharine E A Darling, Esther-Amélie Diserens, Chantal N'Garambe, Anne Ansermet-Pagot, Eric Masserey, Matthias Cavassini, Patrick Bodenmann