6. A particular district of your nation had a higher incidence rate for polio last year compared to the rest of the country. That region has been traditionally been resistant to vaccination efforts. You have commissioned a case-control study for the village to evaluate the situation after a recent outbreak of the disease in the area to measure vaccination status among the 63 poliomyelitis cases and 126 age- and neighborhood-matched controls. Cases were found to be under-vaccinated through routine immunization (matched odds ratio [MOR], 0.3; 95% confidence interval [CI], 0.10.5). a. What do the odds ratio and given confidence interval indicate? (3 points) b. How was the odds ratio calculated? (3 points) c. Write a press release to announce the results of the study to effectively communicate the need for polio vaccination to the lay population in your