The concept of the R value represents the average number of people each person with COVID-19 continues to infect. In other words, it indicates the number of new cases arising from a single case. For example, if the R0 value for a disease in a region is 3, it means that one person infects 3 people.
The average R-number in the UK last week was between 1 and 1.2, Sky News reports. This week, it was announced that the R value rose to the range of 1.2 to 1.4.
According to experts, if the figure is above 1, it means that the epidemic can grow exponentially. Although it is below 1, this indicates that the epidemic is gradually decreasing.
The ‘Delta variant’, which has recently been on the rise in the UK, is thought to contribute to this situation.