Startup Parameters
Live parameters
R₀ (theoretical)=–
· Rt (approx)=–
Timeline
t=0 days
Viewing: Live
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Incidence, Prevalence & % Vaccinated
Incidence: new infections per time step (S→E). Prevalence: infectious individuals at each time. Blue line: percent of the population ever vaccinated.
SEIRD Compartments
Tracks susceptible, exposed, infectious, immune/recovered, and dead over time.
Epidemiologic Summary at Viewed Time
Uses tracked incident infections (S→E) for cumulative incidence, incidence rate, and CFR.
Context
| Time (t) | Days since start | |
|---|---|---|
| Total population (N) | Initial individuals | |
| Alive at t | N − deaths(t) |
Incidence & Risk
| Cumulative incidence (risk) | Incident infections(0→t) / at-risk at start (N − I₀ − immune₀) | |
|---|---|---|
| Incidence risk | Same as cumulative incidence over [0, t] | |
| Average risk per day | Cumulative incidence / time interval | |
| Incidence rate | Incident infections(0→t) / person-time at risk |
Prevalence & Severity
| Point prevalence (infectious) | Infectious(t) / alive(t) | |
|---|---|---|
| Ever infected (unique, simulated) | Individuals with ≥1 S→E since start | |
| Case fatality risk | Deaths(t) / ever infected (incident) |