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.gov website belongs to an official
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information only on official, secure websites.
Parameter definitions and specific values for the model in Box 2.
| Symbol | Definition | Value |
|---|---|---|
| K | Vector biting rate | 0.3 |
| V | Vector density | 1.0 |
| Δ | Vector death rate | 0.15 |
| P | Vector-to-host infectiousness | 0.5 |
| Q | Host-to-vector infectiousness | 0–1 |
| γ | Host-vector contact rate | 0–1 |
| Ξ | Host recovery rate | 0.33 |
| H | Host density | 1.0 |
