Rubeola virus is the pathogen responsible for measles. Measles is an extremely contagious disease passed through air such as when sneezing or coughing. Early symptoms include fever, runny nose, cough, watery eyes and rash. The symptoms appear 1-2 weeks after getting infected. There are various treatment and prevention measures, including vaccines, which can be used to manage the condition. Keep reading to find more, including causes and symptoms.