Question

3
select the correct answer.
measles is a disease that causes fever and rash. the graph gives the number of measles cases in the united states between 1938 and 2019 (measured in 100,000s.) the smaller graph shows recent outbreaks (measured in 200s.) the measles vaccine was introduced in the 1960s. the 2010s also saw a drop in vaccines being taken the united states. what can you conclude using the information in the graph?
measles cases in the united states, 1938 - 2019

Explanation:

Before the measles vaccine was licensed in 1963, the number of measles - cases was high and fluctuating. After 1963, there was a significant decline in the number of cases. In the 2010s, with a drop in vaccine - taking, there were increases in measles cases as shown in the graph, indicating a relationship between vaccine coverage and the incidence of measles.

Answer:

The decline in measles cases after 1963 is likely due to the introduction of the measles vaccine, and the increase in cases in the 2010s may be related to the drop in vaccine - taking.