“…Study designs used in the included studies were RCT/Quasi-experiments (n = 11), cohort (n = 6), and cross-sectional (n = 6). The vaccines targeted included a wide range of illnesses, including influenza [44,[46][47][48][49][50][51][52][53][54][55][56], pneumococcal [47,56], hepatitis [48,[57][58][59][60][61][62], polio [48,54,63,64], pertussis [45,48,[54][55][56]65], diphtheria and tetanus [45,48,[54][55][56], and measles-mumps-rubella [48] Note: AOR = Adjusted Odds Ratio; GP = General Practitioners; HBV= Hepatitis B virus, HCP = Health Care Professional.…”