Josephine van Dongen

Chapter 7 176 Supplementary Material Vaccination coverage for premature infants with gestational age (GA) < 27 weeks Of 319 eligible infants with a gestation below 27 weeks, 81 received care in a par ticipating hospital with a policy to vaccinate off-label. In total, 44 infants were male (54.3%), 13 (16.0%) were small for gestational age and one had a congenital pathology (1.2%). HRV was administered to 71 infants for at least one dose of HRV (87.7% 95%CI 80.3-95.0%). And 12 infants were vaccinated within six and nine weeks of postnatal age (16.9%), 61 before 14 weeks (85.9%). 44 completed surveys 62 parent pairs actively approached 47 responses (response rate 75.8%) 169 completed surveys via Facebook, newsletter or weblink 213 completed surveys + = 42 completed surveys 76 healthcare providers actively approached 47 responses (response rate 61.8%) 94 completed surveys via newsletter or weblink 136 completed surveys + = Figure S2 Flowchar t of those approached for- and responded to the evaluation survey. Study-specific outcomes of evaluation survey and in-depth interviews For most HCP (53.1%), the RIVAR research personnel was the main source of information on rotavirus vaccination and the vaccination strategy in their hospital. As opposed to 46.9% that stated to be informed via colleagues, websites or other sources. Differences between medical doctors and other HCP are presented in table S1 . Table S1. Experience of the RIVAR study program among physicians Statement Medical doctors (N=51) Other HCP (N=84) p-value I am aware of the rotavirus vaccination protocol within the RIVAR project (n agree with statement, %) 37/48 (77.1) 53/78 (67.9) 0.27