Tau statistic for cholera in Sabah, 2015–2020.
Solid line represents estimates of the tau (relative risk) of the next cholera case being within a specified distance to another case within 0–5 days, compared to the risk of the case occurring anywhere in the population within the same time period up to 5km. Blue ribbon represents 95% confidence interval around tau estimates, calculated from 1000 bootstrap replicates. Dashed line represents zero risk (RR = 1). N = 705 symptomatic cases presenting to health facilities.