Figure 1

The weekly mean temperature and the weekly total number of cases. The weekly mean temperature is shown in the blue line graph. The total weekly number of cases is shown in the orange bar chart. The left axis shows the temperature and the right axis shows the number of cases. While the up and down temperature patterns reflect seasonal changes, the bar chart shows that the number of cases also shows a cyclical pattern of fluctuation. The timing of the increase in cases shows synchronization with both the timing of the temperature rise and fall. This figure vaguely captures the increasing trend in the number of cases post-COVID-19 pandemic, however the change in the relationship with temperature is ambiguous.