Measles Vaccination (IMAGE) U.S. National Science Foundation Caption In Ethiopia's Merawi province, nine-year-old Emabet is about to receive her measles vaccination. Public vaccination programs often involve conflicts between individual and public good: another factor to consider when implementing applied evolutionary principles. Credit Pete Lewis, UK Department for International Development Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.