RA | Risk Assessment | SIA | Supplementary Immunization Activities |
SL | Sabin like poliovirus | SL1 | Sabin like poliovirus type 1 |
SL2 | Sabin like poliovirus type 2 | SL3 | Sabin like poliovirus type 3 |
tOPV | Trivalent OPV (contain attenuated Sabin poliovirus type 1, 2 and 3) (No more used since April 2016) | UNICEF | United Nations Children's Fund |
VAPP | Vaccine-associated paralytic polio | VDPV | Vaccine-derived poliovirus |
VDPV1 | Vaccine-derived poliovirus type 1 | VDPV2 | Vaccine-derived poliovirus type 2 |
VDPV3 | Vaccine-derived poliovirus type 3 | WHO | World Health Organization |
WPV | Wild poliovirus | WPV1 | Wild poliovirus type 1 |
WPV2 | Wild poliovirus type 2 | WPV3 | Wild Poliovirus type 3 |