is_manufactured_by has function has role immunizes against disease immunizes recipient immunizes against pathogen measles Measles morbillivirus Homo sapiens FDA licensed vaccine role USA licensed human vaccine preventive vaccine function prophylactic vaccine live attenuated viral vaccine Moraten vaccine http://apps.who.int/iris/bitstream/handle/10665/266590/PMC2554544.pdf?sequence=1&isAllowed=y A more attenuated measles vaccine that targets measles virus strain Moraten. Kallan Roan vaccine Developed sometime in 1968 therefore assumed to be discontinued https://jamanetwork.com/journals/jama/article-abstract/341314 Oliver He live attenuated vaccine role licensed human measles virus vaccine Merck & Co., Inc.