Figure 3. Percentages of different Ct value categories
Before comparing Ct value trends and Rt trends, we compared Rt trends with number of new cases. The number of new cases increased at a point in which Rt rose substantially. By period, there was a marked increase of new cases when Rt rose significantly during the first and second waves, but during the third and fourth waves, Rt remained largely stable despite the number of new cases surging (Figure 4).