M7.5 Madule 7 Homework Saved Help Save & Exit Submit 16 Measles reached an all time low in the United States when the CDC declared it eliminated in 2000. In 2014, 667 cases were reperted and cases continue to occur in clusters throughout the country. Which of the following provides the most plausible explanation for this reemergence? 25 points =Beok Multiple Choice References O The vaccination that was given to children in the 1990s is no longer effective, so the measles virus is able to infect those who thought they were immune. O Parents, worried that vaccines may cause harm to their child, decide not to vaccinate, effectively reducing the herd immunity for any given disease. Q A new strain of the measles virus is now causing disease so a new vaccine would have 1o be administered O The measles virus has mutated and became more virulent than its counterpart in the 1990s. L0 et L2