Subpopulation characteristics | Annual number of bOPV SIAs for each population immunity maintenance scenario | |||
---|---|---|---|---|
Routine immunization coverage with 3 or more non-birth bOPV doses | Basic reproduction number (for serotype 1 wild poliovirus) | Base case (continued high population immunity maintenance) | Medium population immunity maintenance | Low population immunity maintenancea |
5% or 10% | Any | 6 | 4 | 3 |
30% | Any | 5 | 3 | 2 |
60% | 10 or less | 3 | 1 | 1 |
60% | More than 10 | 5 | 3 | 1 |
90% | Any | 1 | 1 | 0 |
98% | 10 or less | 0 | 0 | 0 |
98% | More than 10 | 1 | 0 | 0 |