“…Following the second level of screening, a total of 29 manuscripts were selected for data extraction. Excluded manuscripts (n = 116) were manuscripts describing (hereafter only a few references are given as examples, for a full overview see file "SR datasets.xlsx"): simulation models evaluating control measures (Backer et al, 2015;Dent et al, 2011;Dorigatti et al, 2010;Gonzales et al, 2014;Nickbakhsh et al, 2013;Nickbakhsh et al, 2014;Smith and Dunipace, 2011;te Beest et al, 2011), theoretical risk assessments (Edmunds et al, 2013;Hop and Saatkamp, 2010;Malladi et al, 2015;Martinez et al, 2009;Sanchez-Vizcaino et al, 2010), evaluation of control measures during epidemics (Busani et al, 2007a;Busani et al, 2007b;Mulatti et al, 2010a), quantifying or studying between or within farm transmission during epidemics (Bos et al, 2009), descriptive reviews (Artois et al, 2009;Brown et al, 2007;de Jong et al, 2009;van den Berg, 2009), quantifying risk factors for transmission or infection during epidemics (Busani et al, 2009a;Busani et al, 2009b;Mulatti et al, 2010b;Thomas et al, 2005;Ward et al, 2009a;Ypma et al, 2012), economic analysis of control measures (Boni et al, 2013;Longworth et al, 2014a, b), evaluation of surveillance data or design of surveillance programmes where some of the key features identified for selection and data collection were not provided (Comin et al, 2011;Gonzales et al, 2010;Welby et al, 2010), manuscripts describing the same outbreak as other manuscripts which were considered better suited for this study (Bouwstra et al, 2015a;Ward et al, 2008b), news releases or letters on peer-reviewed journa...…”