| AFP | Acute flaccid paralysis |
| cVDPV | circulating Vaccine-derived polioviruses |
| DRC | Democratic Republic of the Congo |
| ES | Environmental Surveillance |
| GPEI | Global Polio Eradication Initiative |
| GPLN | Global Polio Laboratory Network |
| INRB | Institute National de Recherche biomédicale |
| IPC | Expanded Programme on Immunization |
| NEV | Non enterovirus |
| nOPV2 | Novel oral polio vaccine type 2 |
| NPEV | Non-Poliovirus enterovirus |
| PV1 | Poliovirus serotype 1 |
| PV1SL | Poliovirus serotype 1 Sabin Like |
| PV2 | Poliovirus serotype 2 |
| PV2SL | Poliovirus serotype 2 Sabin Like |
| PV3 | Poliovirus serotype 3 |
| PV3SL | Poliovirus serotype 3 Sabin Like |
| WHO | World Health Organization |
| WPV1 | Wild poliovirus serotype 1 |
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