Median cumulative effectiveness, or fraction of all symptomatic (reported and unreported) cases averted over the 20 year forecast period (see Section S7 in S1 Text).

The median cumulative simulated number of cases in the baseline was 286,000 in the population of 1.82 million people, or 786 per 100,000 per year. After taking into account estimated reporting rates for mild and severe cases, we forecast 75 reported cases per 100,000 per year.