Varicella vaccinations (1st dose), average per month and practice. Stacked bars show proportion of monovalent varicella vaccine (black, n = 22,517) and of tetravalent MMR-V vaccine (grey, n = 27,532). The arrow indicates the change to a two-dose schedule for all licensed varicella vaccines. Data from BaVariPro, practice surveillance Oct 2006-Sep 2011.
Streng et al. BMC Infectious Diseases 2013 13:303 doi:10.1186/1471-2334-13-303