Social & Preventive Medicine General b7c406e8 Which of the following statements is true about the epidemiological determinants of measles? A Measles virus survives outside the human body for 5 days B Carriers are important sources of infection C Secondary attack rate is less than that of rubella D Incidence of measles is more in males than females High-Yield Explanation SAR of measles = 80% and Rubella = 90%