fix grammar and clearity
Figure 2 indicates that as the rate of MCV1 coverage increases, the incidence rate of measles decreases on a global scale.
Figure 2 shows that as the rate of MCV1 coverage increases, there is a corresponding decrease in the incidence rate of measles worldwide.
To improve grammar and clarity, you can rephrase the sentence as follows:
According to Figure 2, there is a clear relationship between the increase in MCV1 coverage rate and the decrease in the global incidence rate of measles.