Table 1 |
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Model parameters |
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Parameter |
Definition |
Value(s) |
References |
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Disease-specific parameters |
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φ |
Routine vaccination rate |
0.5/year |
assumed |
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γ |
Recovery rate |
Disease A: 1/19 per day* Disease B: 1/14 per day* Disease C: 1/30 per day* |
[12] |
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RO |
Basic reproductive number |
Disease A: 6* Disease B:15* Disease C: 14* |
[12] |
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ε |
Efficacy of vaccine after 1 dose |
Disease A: 99%* Disease B: 95%* Disease C: 90%* |
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Country-specific parameters |
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m |
Case importation rate |
0.0001 per year per capita in all countries |
assumed |
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μ |
Birth/death rate (per 1, 000 per year) [As of 2009] |
India: 21.72/1000/yr Nigeria: 36.65/1000/yr Afghanistan: 38.37/1000/yr |
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N |
Total population [As of 2009] |
India: 1, 156, 897, 766 Nigeria: 149, 229, 090 Afghanistan: 28, 395, 716 |
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*The parameter values for diseases A, B and C are hypothetical but plausible, being based on values for common paediatric infections such as measles, pertussis, and polio. (However we note that R0 can vary between populations and over time, and efficacy for oral polio vaccines can be as low as 50%). |
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Fitzpatrick and Bauch BMC Public Health 2011 11:739 doi:10.1186/1471-2458-11-739 |
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