Table 2 Assumed values of the model parameters
Description | Age (months) | Assumed value (per day) |
|---|---|---|
The rate of loss of maternal immunity | ||
Mother acquired immunity by vaccination | 0–6 | 0.0122 |
7–18 | 0.0244 | |
Mother acquired immunity by infection | 0–6 | 0.0063 |
7–18 | 0.0122 | |
Description | Age (years) | Assumed value (per day) |
|---|---|---|
The probability of coefficient of infection (β) | 0–100 | 1.0 × 10−3 |
The rate of loss of immunity acquired by infection | 20–60 | 5.56 × 10−6 |
61− | 2.78 × 10−6 | |
The rate of second vaccine failure (one-time vaccination) | 1–10 | 6.89 × 10−5 |
11–20 | 1.43 × 10−5 | |
The proportion of primary vaccine failure | – | 5% |