Table 1.
Model input | Value | Notes |
---|---|---|
No. of subpopulations | 2 | 1 undervaccinated subpopulation and 1 general population |
Initial age distribution | ||
0–2 mo | 0.01 | Age groups of ≥5 y from a previously published hypothetical population [2] were split into groups of 5–15 y and ≥15 y, according to the age distribution in “less developed regions excluding China” [75], to accommodate the subsequently developed generically mixing age groups of 0–4, 5–14, and ≥15 y [33] |
3–59 mo | 0.15 | |
5–14 y | 0.25 | |
≥15 y | 0.59 | |
Birth rate, births/person/y | 0.02 | Adopted from previously published hypothetical population [2] |
Death rate, deaths/person/y | 0.02 | Adopted from previously published hypothetical population [2] and applied equally to each age group |
Basic reproduction number | 10 | Adopted from previously published hypothetical population [2] |
Proportion of transmission via oropharyngeal route | 0.3 | Adopted from previously published hypothetical population [2] |
Average per-dose OPV take rate for serotype 1 | 0.5 | Similar to typical values in low-income countries for bivalent OPV [33, 34] |
Routine immunization coverage with exactly 3 OPV doses in the general population | 0.95 | Fixed well above the theoretical threshold of 0.92 implied by the other setting-specific inputs from this table |
Generic model inputs are from reports by Duintjer Tebbens et al [33] and Thompson et al [34].
Abbreviation: OPV, oral poliovirus vaccine.