Cross-correlations between climate time series and reported HPS cases.

Tmin represents monthly average minimum temperature, Tmax is the monthly average max temperature, Prcp is cumulative monthly precipitation and Rhx is relative humidity. Each variable was fitted to an ARIMA model and the HPS case time series data was filtered using the estimated coefficients from each of the fitted models. Correlations were then assessed between the residuals from each of the models fitted to the climate variables and the filtered confirmed HPS cases using the cross-correlation function. Significant correlations are in bold.