The chosen region is in central India, UK and worldwide and the sample size was relatively small due to high population. The MMR vaccine has shown consistent result bringing down the number of cases and other factors that have contributed to decrease of cases are public awareness, improved hygiene and notifying reported cases.

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The chosen region for the study is located in central India, the UK, and worldwide. The sample size was relatively small, considering the high population in these areas. The MMR vaccine has consistently shown positive results in reducing the number of cases. Additionally, factors such as public awareness, improved hygiene, and reporting of cases have contributed to the decrease in cases.

The chosen region is in central India, the UK, and worldwide. The sample size was relatively small due to the high population. The MMR vaccine has shown consistent results in bringing down the number of cases. Other factors that have contributed to the decrease in cases include public awareness, improved hygiene, and notification of reported cases.