Pregnant women were tested for immunity to the rubella virus, and they were also tested for immunity to measles, with results given in the following table (based on data from ?Does Rubella Predict Measles Immunity? A Serosurvey of Pregnant Women,? by Kennedy, et al., Infectious Diseases in Obstetrics and Gynecology, Vol. 2006). Use a 0.05 significance level to apply McNemar?s test. What does the result tell us? If a woman is likely to become pregnant and she is found to have rubella immunity, should she also be tested for measles immunity?

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Measles Immune Not Immune Immune 780 62 Rubella Not Immune 10 7