Theme KRI IC IDM Other
Outbreak response speed [14, 35, 43, 55] [98]   [162, 166]
Expanded age group SIAs [35] [98] [129]  
Population immunity* [10, 16, 18, 19, 26, 33–40, 43, 46, 47, 49, 52–58, 60, 68–70, 73–77] [83, 84, 87, 89, 92, 93, 100–102, 109, 111] [131, 133, 140–142] [155, 162]
OPV cessation dynamics [26, 38, 39, 49, 68] [100, 111, 113] [134, 143] [153, 165, 166]
Silent transmission on an IPV background and/or delayed detection of transmission due to IPV use [26–28, 39, 41] [97] [133] [162, 164, 166, 170]
Role of IPV after OPV cessation [18–20, 25, 28, 33, 39, 51–60, 64, 65, 68, 69, 73–77, 80] [90, 91, 94, 97, 103, 114, 115, 118–120, 122] [133] [153]
Undetected circulation [27, 46, 70, 71, 75, 76]   [132, 136] [161, 165, 167–169]
Role of IPV in outbreak response SIAs [51, 55, 64, 68]   [133] [150, 164]
Environmental surveillance [43, 46, 55, 67, 71, 73–76, 78] [117] [136, 145, 147] [162, 166]
Vaccine stockpile [21, 23, 53, 65, 77]     [174]
iVDPVs [4, 13, 50, 61, 81] [125]