Fig. 2From: Evaluation of vaccination herd immunity effects for anogenital warts in a low coverage setting with human papillomavirus vaccine—an interrupted time series analysis from 2005 to 2010 using health insurance dataRelative incidence of AGWs by sex and age a overall, b females, c males (incidence 2005–2007* compared to incidence 2009–2010). (Dotted lines indicate 95% confidence interval). *up to 2nd quarter of 2007Back to article page